CN104190827B - Method for winding spiral penetrating spring - Google Patents

Abstract

The method belongs to the technical field of filling type mattresses, and discloses a method for winding a spiral penetrating spring. The method is characterized in that in the spring stringing process, it is guaranteed that in two upper supporting rings in the same longitudinal direction, the penetrating-in contact portions and the penetrating-out contact portions of the penetrating spring and the upper supporting rings are arranged on the two sides of the threaded axis of the penetrating spring respectively; in two adjacent upper supporting rings in the same transverse direction, the penetrating-in contact portions of the penetrating spring and the two upper supporting rings are arranged on the two sides of the threaded axis of the penetrating spring respectively, and the penetrating-out contact portions of the penetrating spring and the two upper supporting rings are arranged on the two sides of the threaded axis respectively. Compared with a former disorderly winding method or a winding method referred to in the background, the winding method is studied by analyzing the stress condition of the supporting rings and the penetrating spring, the structure of a whole spring core can be firmer, stress can be more balanced, and the possibility of potential quality hazards caused by the spring core structure is lowered.

Description

A kind of winding method of helical spring

technical field

The invention belongs to the technical field of stuffed mattresses.

Background technique

Spring mattress is a bedding made of spring and soft padding as the inner core material, and the outer cover is made of fabric fabric or soft mat. Spring mattresses have a relatively even and reasonable distribution of body support, which can not only play a sufficient supporting role, but also ensure a reasonable physiological curvature of the spine, and has become the mainstream stuffed mattress. The existing spring mattress is composed of a spring core, filling material and seam layer. The spring core is the most important structure of the spring mattress and also the supporting structure of the mattress. The spring core can adopt concave springs, continuous springs, pocket springs Manufactured in different spring forms such as loaded springs, among which the concave spring is the most commonly used mattress spring. This concave spring is an upright spring made of steel wire with large ends and a small middle. Most mattresses are Made with this spring. The traditional manufacturing method of the spring core is as follows: first arrange the concave springs in multiple rows according to the width direction of the mattress, and then use the spiral spring to connect the upper and lower support rings (that is, the upper and lower rings) of the two adjacent rows of concave springs. support ring) connected in series to form a "community of force" (spiral springs are commonly known as threaded springs and threaded springs, which are small cylindrical coil springs made of steel wires), and the concave springs in the length direction of the mattress There is a clearance distance H between them.

Fig. 1 is the top view of existing spring core (with vertical as column, horizontal as row), each threaded spring 2 connects the upper support ring 1 (or lower support ring) of two adjacent rows of concave springs in series Together, in the same transversely adjacent longitudinal concave spring, the penetration contact portion of the threaded spring and the concave spring is located on the same side of the thread axis of the threaded spring, and the exit contact portion of the threaded spring and the concave spring is located on the same side of the thread axis of the threaded spring. On the same side of the axis, as in the upper row of threaded springs 2 in Figure 1, the threaded contact parts B and D are located on the lower side of the thread axis A, and the threaded contact parts B1 and D1 are located on the upper side of the helical axis A. Figure 2 is a schematic diagram of the lateral force of the existing spring core. When the spring core is subjected to a lateral force F from right to left, the component force f of the lateral force F acts on parts B, C, D and E. The disadvantages are: ① Lateral direction The force causes the concave springs in the middle row to be laterally squeezed and staggered, which will lead to uneven arrangement of the concave springs in each row; The spring core is deformed, and the service life of the spring bed is reduced.

Contents of the invention

The invention intends to provide a winding method of a helical threaded spring with strong fastening force and capable of preventing deformation of the spring core.

The object of the present invention can be achieved by the following measures: a winding method of a helical spring, comprising the following steps:

1. Arrange the circular springs: place several circular springs on the workbench of the spring threading machine to form the first horizontal row, and the distance between adjacent springs in the horizontal row is H; the second horizontal row of circular springs and the first horizontal row The circular springs are vertically aligned, and the upper and lower support rings of the second horizontal row of circular springs are respectively close to or intersected with the upper and lower support rings of the first horizontal row of circular springs corresponding to the longitudinal direction;

2. String springs: Use a spring threading machine to horizontally penetrate the threaded springs into the upper support rings that are close to each other or cross each other, so that the first horizontal row of circular springs and the second horizontal row of circular springs are connected to each other; in the process of stringing springs, ensure that In the two upper support rings in the same longitudinal direction, the penetration contact part and the exit contact part of the thread spring and the upper support ring are respectively located on both sides of the thread axis of the thread thread; in the two adjacent support rings in the same horizontal direction, the thread spring The penetration contact parts with the two upper support rings are respectively located on both sides of the thread axis of the threaded spring, and the exit contact parts of the thread spring and the two upper support rings are respectively located on both sides of the thread axis;

3. Stringing springs sequentially: add a third horizontal row of circular springs in the longitudinal direction of the second horizontal row of circular springs, repeat steps 1 and 2, complete the stringing operation of the supporting rings on all horizontal circular springs, and the spring core is initially formed;

4. Turn over and string springs: Turn over the spring core after step 3, and string the spring core under the spring core according to step 1, step 2, and step 3 in order to complete the production of the entire spring core.

The difference between the above technical solution and the prior art is that in the process of stringing springs, among the two adjacent circular springs in the same horizontal direction, the penetrating contact parts of the threaded spring and the two circular springs are respectively located on both sides of the thread axis of the threaded spring. The contact parts of the threaded spring and the two round springs are respectively located on both sides of the thread axis. This winding method makes when the spring core is compressed, the component force of the transverse tension on the threaded spring is evenly distributed on both sides, avoiding the traditional In the structure, all the springs are subjected to the component force of the same side, which is prone to deformation and decreased fastening force. In addition, it can also prevent the middle row of circular springs in any three rows of circular springs from being squeezed and dislocated, ensuring The overall structural stability of the spring core.

Further, the circular spring adopts a concave spring, which has a large load and good cushioning performance, and is an ideal spring for making a spring core.

Further, the diameter of the upper support ring of the concave-shaped spring is 54mm, the diameter of the concave part is 44mm, the free height is 153mm, the diameter of the steel wire is 1.9mm, and the number of turns is not less than 6; the steel wire through the spring The diameter is 1.6mm, the thread diameter is 8.5mm, and the thread pitch is 11mm. If you choose this type of concave spring and threaded spring, the structure of the spring core will be more firm.

Further, the distance H is 11mm, and the spring cores distributed at this distance are evenly stressed.

The present invention changes the winding method of the helical threaded spring. Compared with the previous messy winding method or the winding method mentioned in the background, by analyzing the force of the support ring and the threaded spring, the winding method disclosed in the present invention is developed, which can make The structure of the whole spring core is stronger, and the force is more balanced, which reduces the possibility of hidden quality problems caused by the structure of the spring core.

Description of drawings

Below in conjunction with accompanying drawing and specific embodiment the present invention will be described in further detail:

Fig. 1 is the top view schematic diagram of traditional spring core structure;

Fig. 2 is the stressed schematic diagram of the spring core in Fig. 1 being subjected to the lateral force F;

Fig. 3 is the plan view schematic diagram of spring core structure of the present invention;

FIG. 4 is a force schematic diagram of the lateral force F applied to the middle spring core in FIG. 3 .

detailed description

Embodiment: see Fig. 3 and Fig. 4, a kind of winding method of helical spring, set the length direction of the spring core as the longitudinal direction, the width direction of the spring core as the transverse direction, the spring core support adopts a support ring with a diameter of 54mm, and A concave spring 1 with a diameter of 44mm, a free height of 153mm, and a steel wire diameter of 1.9mm, the number of turns of the concave spring is not less than 6. What the concave spring in the connection adopts is that the screw diameter is 8.5mm, the thread pitch is 11mm and the steel wire diameter is the threading spring 2 of 1.6mm. If make the spring mattress of 1.8*2.0 meter specification, the present invention comprises the following steps:

1. Arrange the concave springs: place 27 concave springs 1 on the workbench of the spring threading machine to form the first horizontal row, and the distance between adjacent concave springs 1 in the horizontal row is H, H=11mm . Add the concave springs 1 in the second row, the concave springs 1 in the first row are longitudinally aligned with the concave springs 1 in the second row, and the upper and lower support rings of the concave springs 1 in the second row are respectively aligned with the The upper and lower support rings of the concave springs 1 in the first horizontal row aligned longitudinally are close to each other or intersect.

2. String springs: use a spring threading machine to thread the threaded springs 2 into the upper support rings that are close to each other or cross each other, so that the concave springs 1 in the first horizontal row and the concave springs 1 in the second horizontal row are connected to each other; In the process of stringing springs, ensure that in the two upper support rings that are close to each other or cross each other in the same longitudinal direction, the penetrating contact part B and the penetrating contact part B1 of the threaded spring 2 and the concave spring 1 are respectively located on the thread axis of the threaded spring 2 Both sides of A. In two adjacent upper support rings in the same horizontal direction, the penetrating contact part B of the threaded spring 2 and the first upper support ring and the penetrating contact part D of the threaded spring 2 and the second upper support ring are respectively located on the thread axis On both sides of A, similarly, the wear-out contact portion B1 of the wear spring 2 and the first upper support ring and the wear-out contact portion D1 of the wear spring 2 and the second concave spring 1 are respectively located on both sides of the thread axis A. side.

3. String springs in sequence: Add the third horizontal row of concave springs 1 in the longitudinal direction of the second horizontal row of concave springs 1, so that the penetrating contact part C in the third row is longitudinally aligned with the penetrating contact part B. The entry contact part E and the penetration contact D part are longitudinally aligned, and so on, so that the exit contact portions on the same longitudinal circular spring are also aligned. Repeat step 1 and step 2 to complete the stringing operation of the supporting rings on the concave springs 1 in all horizontal rows, and the spring cores are preliminarily formed.

4. Turn over and string springs: Turn over the spring core after step 3, and string the spring core under the spring core according to step 1, step 2, and step 3 in order to complete the production of the entire spring core. The last completed spring core has 27 concave springs 1 in horizontal rows and 41 concave springs in vertical rows.

When in use, the gravity of the person causes the spring core to sink, and the concave spring 1 is compressed so that the through spring 2 is under tension. As shown in Figure 4, the spring core is under the force of the transverse tension F, and the component force f received by the through spring 2 is evenly distributed. On both sides, if the penetrating spring 2 and the circular spring are in contact with parts B and D, they are subject to component force f. Since parts B and D are located on both sides of the helical axis A, the force on the through spring 2 is uniform, and it is not easy to Deformation occurs, which ensures the fastening force of the threaded spring 2. At the same time, it can also prevent the concave springs 1 in the middle row of any three rows of concave springs 1 from being squeezed and dislocated after being subjected to unbalanced tension.

The above description is only a detailed description of the preferred embodiments of the present invention, and is not intended to limit the present invention. All embodiments with similar changes made according to the creative spirit of the present invention should be included in the present invention.

Claims (4)

1. A winding method for a helical spring, comprising the following steps: 1. Arrange the circular springs: place several circular springs on the workbench of the spring threading machine to form the first horizontal row, and the distance between adjacent springs in the horizontal row is H; the second horizontal row of circular springs and the first horizontal row The circular springs are vertically aligned, and the upper and lower support rings of the second horizontal row of circular springs are respectively close to or intersected with the upper and lower support rings of the first horizontal row of circular springs corresponding to the longitudinal direction; 2. String springs: Use a spring threading machine to horizontally penetrate the threaded springs into the upper support rings that are close to each other or cross each other, so that the first horizontal row of circular springs and the second horizontal row of circular springs are connected to each other; in the process of stringing springs, ensure that In the two upper support rings in the same longitudinal direction, the penetration contact part and the exit contact part of the thread spring and the upper support ring are respectively located on both sides of the thread axis of the thread thread; in the two adjacent support rings in the same horizontal direction, the thread spring The penetration contact parts with the two upper support rings are respectively located on both sides of the thread axis of the threaded spring, and the exit contact parts of the thread spring and the two upper support rings are respectively located on both sides of the thread axis; 3. Stringing springs sequentially: add a third horizontal row of circular springs in the longitudinal direction of the second horizontal row of circular springs, repeat steps 1 and 2, complete the stringing operation of the supporting rings on all horizontal circular springs, and the spring core is initially formed; 4. Turn over and string springs: Turn over the spring core after step 3, and string the spring core under the spring core according to step 1, step 2, and step 3 in order to complete the production of the entire spring core. 2. A method for winding a helical threaded spring according to claim 1, wherein the circular spring is a concave spring. 3. The winding method of a kind of helical spring according to claim 2, characterized in that: the diameter of the supporting ring of the concave spring is 54mm, the diameter of the concave part is 44mm, the free height is 153mm, and the diameter of the steel wire is 54mm. 1.9mm, the number of turns is not less than 6 turns; the diameter of the steel wire through the spring is 1.6mm, the thread diameter is 8.5mm, and the pitch is 11mm. 4. A method for winding a helical threaded spring according to claim 3, characterized in that: the distance H is 11 mm.