Tension testing device for wire forming spring

Abstract

The utility model discloses a tension testing device for a wire forming spring. A first insertion plate is arranged on a seat body in an up-and-down movable manner; the second insertion plate is fixed on the seat body; the first inserting plate and the second inserting plate are provided with inserting ends used for being inserted between two adjacent spiral rings of the wire forming spring in the front-back direction. A tension sensor is arranged on the first insertion plate; the up-down driving mechanism is fixed on the seat body; the driving end of the up-down driving mechanism is connected with the tension sensor; the supporting plate is arranged on the seat body in a front-back moving manner and is provided with a feeding position far away from the first inserting plate and the second inserting plate and a testing position close to the first inserting plate and the second inserting plate; a vertical rod is arranged on the supporting plate; a first avoiding groove extending up and down is formed in the vertical rod; and at the test position, the first insertion plate and the second insertion plate are inserted into the first avoiding groove. According to the wire forming spring assembling device, the wire forming spring is convenient and fast to assemble and fix, time and labor are saved, and the assembling requirements of the wire forming springs with different outer diameters can be met.

Description

Technical Field

[0001] The utility model relates to the technical field of spring testing devices, in particular to a wire-formed spring tensile testing device. Background Art

[0002] As Figure 1 shown is a wire-formed spring processed by a wire-formed spring machine in the prior art. When performing a tensile test on the wire-formed spring, both ends of the wire-formed spring need to be fixedly connected to a fixing device respectively, and then a driving mechanism is used to drive the fixing device on one side to move, so as to drive the wire-formed spring to stretch, thereby performing a tensile test. The above operation method is shown in a tensile detection device for spring production disclosed in a Chinese utility model patent with the application number 202320310253.3. In the above operation method, the fixed assembly of both ends of the wire-formed spring is cumbersome, time-consuming and laborious. For wire-formed springs with different outer diameters, fixing devices of different sizes need to be replaced for adaptation, which is difficult to meet the tensile test requirements of wire-formed springs. Summary of the Utility Model

[0003] Aiming at the above existing technical problems, the purpose of the utility model is to propose a wire-formed spring tensile testing device, which is convenient, fast, time-saving and labor-saving for the assembly and fixation of wire-formed springs, and can adapt to the assembly requirements of wire-formed springs with different outer diameter sizes, effectively meeting the tensile test requirements of wire-formed springs.

[0004] The technical solution of the utility model is realized as follows: A wire-formed spring tensile testing device includes a seat body, a first insertion plate, a second insertion plate, a support plate, and an up-and-down driving mechanism;

[0005] The first insertion plate and the second insertion plate are arranged at intervals up and down; the first insertion plate is movably arranged up and down on the seat body; the second insertion plate is fixed on the seat body; the first insertion plate and the second insertion plate extend in the front-rear direction and both have insertion ends for inserting between adjacent two coils of the wire-formed spring in the front-rear direction.

[0006] A tensile sensor is arranged on the first insertion plate; the up-and-down driving mechanism is fixed on the seat body and has a driving end that moves up and down; the driving end of the up-and-down driving mechanism is connected to the tensile sensor;

[0007] The support plate is movably arranged in the front-rear direction on the seat body and has a feeding position far from the first insertion plate and the second insertion plate and a testing position close to the first insertion plate and the second insertion plate; a vertical rod is arranged on the support plate; a first avoidance groove extending up and down is arranged on the vertical rod; in the testing position, the first insertion plate and the second insertion plate are both inserted into the first avoidance groove.

[0008] Further, a threaded rod extending vertically is provided on the base; the second insertion plate is vertically movably arranged on the threaded rod; adjusting nuts are provided on the threaded rod on both the upper and lower sides of the second insertion plate.

[0009] Further, a positioning sleeve is provided above the vertical rod on the base; the positioning sleeve is threadedly connected to the base and has a positioning position and a disengaging position in the vertical direction; in the test position and the positioning position, the upper end of the vertical rod is inserted into the positioning sleeve; in the disengaging position, the positioning sleeve is away from the upper end of the vertical rod.

[0010] Further, a protective sleeve is sleeved outside the vertical rod on the support plate; a spring accommodation space is formed between the protective sleeve and the vertical rod; a second avoidance groove is provided on the protective sleeve corresponding to the first avoidance groove.

[0011] Further, a guiding rod extending vertically is provided on the base; sliders are provided on the first insertion plate and the second insertion plate; the sliders are slidably arranged on the guiding rod.

[0012] Further, limit blocks are provided on the base corresponding to the feeding position and the test position; in the feeding position and the test position, the support plate and the corresponding limit blocks form a front-back limit fit.

[0013] Due to the application of the above technical solutions, the utility model has the following advantages compared with the prior art:

[0014] 1. By the combined use of the first insertion plate and the second insertion plate, the wire-formed spring to be tested can be sleeved on the vertical rod. When the support plate moves to the test position, the first insertion plate and the second insertion plate can be inserted between two adjacent coils of the wire-formed spring in the front-back direction to realize the assembly and fixation of both ends of the wire-formed spring. By driving the first insertion plate to move, one end of the wire-formed spring can be driven to move to stretch the wire-formed spring, so as to realize the tensile test operation. Through the combination of the above methods, the assembly and fixation of the wire-formed spring are convenient, fast, time-saving and labor-saving, and can adapt to the assembly requirements of wire-formed springs with different outer diameters, effectively meeting the tensile test requirements of wire-formed springs.

[0015] 2. By the combined use of the threaded rod and the adjusting nut, the vertical height of the second insertion plate can be adjusted so that the second insertion plate can be inserted between two adjacent coils of the wire-formed spring at different positions, effectively meeting the tensile test requirements of wire-formed springs with different pitches.

[0016] 3. By the combined use of the positioning sleeve, the vertical rod can be positioned to prevent the vertical rod and the support plate from moving during the test, and at the same time, it can prevent the wire-formed spring from disengaging from the top of the vertical rod, with strong practicability.

[0017] 4. Through the combined use of the protective sleeve, during the test, the wire-formed spring is wrapped inside the protective sleeve, which can prevent the hazards caused by the breakage, detachment, etc. of the wire-formed spring, effectively improve the safety during the test, and has strong practicability. BRIEF DESCRIPTION OF THE DRAWINGS

[0018] The technical solution of the present utility model will be further described below in conjunction with the drawings:

[0019] Figure 1 is a wire-formed spring of the prior art;

[0020] Figure 2 is a three-dimensional structure diagram of the overall structure of the present utility model;

[0021] Figure 3 is Figure 2 a cross-sectional structure diagram;

[0022] Figure 4 is Figure 2 a three-dimensional structure diagram of the supporting plate in the test position in

[0023] Figure 5 is Figure 4 a cross-sectional structure diagram;

[0024] Figure 6 is Figure 4 an exploded view;

[0025] Among them: 1. Base body; 11. Limit block; 12. Guide rod; 2. First insertion plate; 3. Second insertion plate; 4. Threaded rod; 41. Adjusting nut; 5. Tensile sensor; 51. Up and down driving mechanism; 6. Supporting plate; 61. Upright rod; 611. First avoidance groove; 62. Protective sleeve; 621. Second avoidance groove; 7. Positioning sleeve; 8. Slide block. DETAILED DESCRIPTION OF THE EMBODIMENTS

[0026] The preferred embodiments of the present utility model will be described in detail below in conjunction with the drawings, so that the advantages and features of the present utility model can be more easily understood by those skilled in the art, thereby making a clearer and more definite definition of the protection scope of the present utility model.

[0027] As shown in Figure 2-6The figure shows a wire forming spring tension test device described in this embodiment, which is particularly suitable for the tension test requirements of spiral springs. The tension test device includes a seat body 1, a first interleaving plate 2, a second interleaving plate 3, a support plate 6 and other components. Among them, the seat body 1 is fixed on the ground to support the overall structure. The first interleaving plate 2 and the second interleaving plate 3 are arranged on the seat body 1 at intervals up and down. The first interleaving plate 2 and the second interleaving plate 3 are both flat structures, made of metal materials, and have a designed thickness. The first interleaving plate 2 and the second interleaving plate 3 both have a certain rigidity and strength, and it is difficult to bend or be damaged when subjected to force. The first interleaving plate 2 is movably installed on the seat body 1 up and down. The second interleaving plate 3 is arranged below the first interleaving plate 2 and is fixed on the seat body 1. The first interleaving plate 2 and the second interleaving plate 3 both extend in the front-to-back direction, and both have an interleaving end for inserting between two adjacent spiral coils of the wire forming spring in the front-to-back direction.

[0028] In the specific structural design, a guide rod 12 extending up and down is installed on the base body 1. A slider 8 is connected to both the first insertion plate 2 and the second insertion plate 3. The first insertion plate 2 is slidably installed on the guide rod 12 through the slider 8. The second insertion plate 3 is slidably installed on the guide rod 12 through the slider 8 so that it can move up and down relative to the base body 1. A threaded rod 4 extending up and down is installed on the base body 1. The slider 8 connected to the second insertion plate 3 is sleeved on the threaded rod 4 so that it can move up and down along the threaded rod 4. Adjusting nuts 41 are installed on the upper and lower sides of the slider 8 on the second insertion plate 3 on the threaded rod 4. By locking the adjusting nut 41, the second insertion plate 3 is locked to limit its up and down movement. In addition, by screwing the adjusting nuts 41 on the upper and lower sides, the upper and lower heights of the second insertion plate 3 can be adjusted.

[0029] A tension sensor 5 is installed on the slider 8 connected to the aforementioned first insertion plate 2. The tension sensor 5 is a conventional component of the prior art. An up-and-down driving mechanism 51 is fixed on the top of the seat body 1 and has a driving end that moves up and down. The driving end of the up-and-down driving mechanism 51 is connected to the tension sensor 5. The tension sensor 5 and the first insertion plate 2 can be driven to move as a whole by the driving of the up-and-down driving mechanism 51. The above-mentioned up-and-down driving mechanism 51 is preferably a hydraulic cylinder.

[0030] In this embodiment, the foregoing pallet 6 is movably mounted on the seat body 1 through a sliding groove in the front-back direction. The pallet 6 has a loading position away from the first insertion plate 2 and the second insertion plate 3 and a testing position close to the first insertion plate 2 and the second insertion plate 3. A vertical rod 61 is fixed on the pallet 6. The lower end of the vertical rod 61 is fixedly welded to the pallet 6, and the upper end forms a free end. The wire forming spring can be sleeved on the vertical rod 61 via the upper end of the vertical rod 61. A first avoidance groove 611 extending in the up-down direction is machined on the vertical rod 61. The first avoidance groove 611 penetrates through the vertical rod 61 in the front-back direction. When in the foregoing testing position, both the first insertion plate 2 and the second insertion plate 3 can penetrate into the first avoidance groove 611. Through the above structural design, when the wire forming spring is inserted on the vertical rod 61, the pallet 6 is moved to the testing position so that the insertion ends of the first insertion plate 2 and the second insertion plate 3 can be inserted between two adjacent coils of the wire forming spring in the front-back direction.

[0031] In this embodiment, limit blocks 11 are installed on the seat body 1 corresponding to the loading position and the testing position. When the pallet 6 is in the loading position and the testing position, the pallet 6 abuts against the corresponding limit blocks 11 to form a front-back limit fit, thereby being able to limit the movement of the pallet 6.

[0032] Among them, a positioning sleeve 7 is installed above the vertical rod 61 on the top of the seat body 1. The positioning sleeve 7 is of a hollow structure, and one end facing the vertical rod 61 forms an open end. The positioning sleeve 7 is threadedly connected to the seat body 1 and has a positioning position and a disengaging position in the up-down direction. In the foregoing testing position, the positioning sleeve 7 corresponds to the vertical rod 61 up and down. By rotating the positioning sleeve 7 to the positioning position, the positioning sleeve 7 moves downward so that the upper end of the vertical rod 61 can be inserted into the positioning sleeve 7 via the open end, thereby being able to position the vertical rod 61 to limit the movement of the vertical rod 61. By rotating the positioning sleeve 7 to the disengaging position, the positioning sleeve 7 moves upward so that the upper end of the vertical rod 61 disengages from the positioning sleeve 7.

[0033] In this embodiment, a protective sleeve is sleeved outside the vertical rod 61 on the pallet 6. The protective sleeve extends in the up-down direction, and its upper end is slightly lower than the upper end of the vertical rod 61. A spring accommodating space is formed between the protective sleeve and the vertical rod 61. An inlet and outlet for the wire forming spring to enter and exit is formed between the upper end of the protective sleeve and the upper end of the vertical rod 61. When the wire forming spring is inserted onto the vertical rod 61, it synchronously enters the spring accommodating space. Through the above structural design, the wire forming spring is wrapped inside the protective sleeve to play a blocking role on the wire forming spring. A second avoidance groove 621 is machined on the foregoing protective sleeve corresponding to the first avoidance groove 611. When the pallet 6 is moved to the testing position, the first insertion plate 2 and the second insertion plate 3 are inserted into the first avoidance groove 611 and the second avoidance groove 621.

[0034] During specific use, the first insertion plate 2 is driven to move by controlling the up-and-down driving mechanism 51 to adjust the first insertion plate 2 to a suitable height. By screwing the adjusting nut 41, the second insertion plate 3 is adjusted to a suitable height. The support plate 6 is moved to the feeding position, and the wire-formed spring to be tested is sleeved onto the vertical rod 61 through the protective sleeve and the upper end of the vertical rod 61, and the wire-formed spring is synchronously received in the protective sleeve. The support plate 6 is driven to move to the testing position, and the positioning sleeve 7 is rotated to the positioning position so that the upper end of the vertical rod 61 penetrates into the inside of the positioning sleeve 7 to position the vertical rod 61 to prevent the vertical rod 61 and the support plate 6 from moving during the testing process, and at the same time, it can prevent the wire-formed spring from detaching from the top of the vertical rod 61. When the support plate 6 moves to the testing position, the first insertion plate 2 and the second insertion plate 3 are inserted between two adjacent coils of the wire-formed spring in the front-back direction to realize the assembly and fixation of both ends of the wire-formed spring. By driving the first insertion plate 2 to move, one end of the wire-formed spring can be driven to move to stretch the wire-formed spring, thereby realizing the tensile test operation. Through the combination of the above methods, the assembly and fixation of the wire-formed spring are convenient and fast, time-saving and labor-saving, and can meet the assembly requirements of wire-formed springs with different outer diameters, effectively meeting the tensile test requirements of wire-formed springs. The up-and-down height of the second insertion plate 3 can be adjusted so that the second insertion plate 3 can be inserted between two adjacent coils of the wire-formed spring at different positions to effectively meet the tensile test requirements of wire-formed springs with different pitches. During the testing process, the positioning sleeve 7 plays a protective role, and the wire-formed spring is wrapped inside the protective sleeve 62, which can prevent the hazards caused by the breakage and falling off of the wire-formed spring, etc., effectively improving the safety during the testing process and having strong practicability.

[0035] The above are only the embodiments of the present invention, and do not limit the patent scope of the present invention accordingly. Any equivalent structure or equivalent process transformation made by using the content of the specification of the present invention, or directly or indirectly applied in other related technical fields, shall be equally included in the patent protection scope of the present invention.

Claims

1. A wire forming spring tension test device, comprising a seat, a first insertion plate, a second insertion plate, a support plate, and an upper and lower driving mechanism; characterized in that: The first insertion plate and the second insertion plate are arranged at intervals in the upper and lower parts; the first insertion plate is movably arranged on the seat body in the upper and lower parts; the second insertion plate is fixed on the seat body; the first insertion plate and the second insertion plate extend in the front-to-back direction, and both have an insertion end for inserting between two adjacent spiral coils of the wire forming spring in the front-to-back direction; The first insertion plate is provided with a tension sensor; the up-down driving mechanism is fixed on the base body and has a driving end that moves up and down; the driving end of the up-down driving mechanism is connected to the tension sensor; The support plate is movably arranged on the base body forward and backward, and has a loading position away from the first insertion plate and the second insertion plate and a testing position close to the first insertion plate and the second insertion plate; a vertical pole is provided on the support plate; a first avoidance groove extending up and down is provided on the vertical pole; in the testing position, the first insertion plate and the second insertion plate are both inserted in the first avoidance groove.

2. A wire forming spring tension testing device according to claim 1, characterized in that: The seat body is provided with a threaded rod extending up and down; the second insertion plate is movably arranged on the threaded rod up and down; and the threaded rod is provided with adjusting nuts on the upper and lower sides of the second insertion plate.

3. A wire forming spring tension testing device according to claim 1, characterized in that: A positioning sleeve is provided on the seat body above the vertical pole; the positioning sleeve is threadedly connected to the seat body and has a positioning position and a disengagement position in the up and down directions; in the test position and the positioning position, the upper end of the vertical pole is inserted into the positioning sleeve; in the disengagement position, the positioning sleeve is away from the upper end of the vertical pole.

4. A wire forming spring tension testing device according to claim 1, characterized in that: A protective sleeve is sleeved on the outside of the vertical pole on the support plate; a spring accommodating space is formed between the protective sleeve and the vertical pole; and a second avoidance groove is provided on the protective sleeve corresponding to the first avoidance groove.

5. A wire forming spring tension testing device according to claim 1, characterized in that: The seat body is provided with a guide rod extending up and down; the first insertion plate and the second insertion plate are provided with a slider; the slider is slidably arranged on the guide rod.

6. A wire forming spring tension testing device according to claim 1, characterized in that: The seat body is provided with limit blocks corresponding to the loading position and the test position; at the loading position and the test position, the support plate and the corresponding limit blocks form front and rear limit cooperation.

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