Production process of a spring for a mattress

Abstract

The present invention discloses a production process for a spring used in a mattress, which relates to the field of spring production and includes a base, a first connecting seat, a second connecting seat, a positioning rod, a transmission mechanism, a servo motor, a first lead screw, and a second lead screw; a limiting mechanism, a first rack, a second rack, a movable rod, and a limiting rod. By setting the transmission mechanism and the limiting mechanism, when the spring is being produced and processed, the movement of the first connecting seat can limit the material, and the second connecting seat gradually moves away from the first connecting seat. At the same time, when the first connecting seat moves, it drives the positioning rod to rotate, so that the spring is wound around the outer wall of the positioning rod in a spiral shape. When the first connecting seat moves to a certain position, the spring is formed. The continued movement of the first connecting seat will also cause the inner cavity of the second connecting seat to disengage from the outer wall of the positioning rod, and there is a certain distance, and the limiting rod no longer limits one end of the spring tooth material, thus completing the production of the spring.

Description

Technical Field

[0001] The present invention relates to the production field of springs, and specifically to a production process for springs used in mattresses. Background Art

[0002] A spring is a mechanical part that utilizes elasticity. A part made of elastic material deforms under the action of an external force and returns to its original state after the external force is removed. It is also called a "spring", generally made of spring steel. Springs are of various complex types. Classified by shape, there are mainly helical springs, scroll springs, leaf springs, special-shaped springs, etc.

[0003] For the existing springs used in mattresses, they are generally medium-sized springs. During production, the spring steel is fixed on a positioning rod. By rotating and moving the positioning rod at the same time, the spring steel is wound around the outer wall of the positioning rod to form a threaded shape, and then the excess spring is cut off to complete the forming. After the existing spring processing device is used, it is necessary to manually release the limit on the spring and then pull out the positioning rod to take out the processed spring, which requires multiple driving units to cooperate. For example, a driving motor controls the rotation of the positioning rod, a reduction motor and a lead screw control the movement of the positioning rod, and a clamping motor limits the movement of the positioning rod. In order to reduce the number of driving units, reduce the use cost and energy consumption, the present invention proposes a production process for springs used in mattresses. Summary of the Invention

[0004] The purpose of the present invention is to provide a production process for springs used in mattresses to solve the problem that the existing spring processing requires the cooperation of multiple driving units and consumes a large amount of energy.

[0005] To achieve the above purpose, the present invention provides the following technical solution: A production process for springs used in mattresses, including the following steps:

[0006] S1, fixing the spring steel on the positioning rod through a limiting unit;

[0007] S2, winding the spring rod around the positioning rod by starting the driving unit to make the spring steel in a threaded shape;

[0008] S3, releasing the limit on the threaded spring steel and using a cutting tool to cut off the excess part of the processed spring steel;

[0009] S4, performing strength detection on the cut spring steel;

[0010] Among the tools used in steps S1 and S2, there is a base. Symmetrically installed on the top end of the base are a first connecting seat and a second connecting seat. A positioning rod is rotatably connected to one side of the outer wall of the first connecting seat close to the second connecting seat. It is characterized in that there is a transmission mechanism installed inside the base and extending into the first connecting seat. The transmission mechanism includes a servo motor installed inside the base. The output end of the servo motor is connected to a first lead screw that penetrates the protruding part at the bottom end of the first connecting seat. One end of the first lead screw is connected to a second lead screw that penetrates the protruding part at the bottom end of the second connecting seat.

[0011] A limiting mechanism is provided on the outer wall of the first connecting seat and extends into the first connecting seat. The limiting mechanism includes a first rack and a second rack that are installed on the outer wall of the top end of the base and are staggered at one end close to the first connecting seat. The tooth blocks on the outer walls of the first rack and the second rack are close to each other, and the first rack and the second rack are away from each other. The limiting mechanism further includes a movable rod slidably arranged in the inner cavity of the first connecting seat. A limiting rod is rotatably connected to the outer wall of the first connecting seat, and one end of the limiting rod is located in the inner cavity of the movable rod.

[0012] As a further scheme of the present invention: A third connecting seat for limiting the conveying of materials is further installed on the top end of the base. The third connecting seat is located on one side of the first connecting seat and the second connecting seat.

[0013] As a further scheme of the present invention: The transmission mechanism further includes a first spur gear fixed to the outer wall of the first lead screw. The transmission mechanism further includes a rotating rod that is horizontally slidably connected to the top end of the base through a mounting bracket. One end of the rotating rod is connected to a gear column. The gear column meshes with the outer wall of the top end of the first spur gear. One end of the gear column is fixedly connected to a passive runner. The passive runner is rotatably connected to the inner wall of the first connecting seat. A chain is sleeved and meshed in the inner cavity of the passive runner.

[0014] As a further scheme of the present invention: The limiting mechanism further includes a third lead screw rotatably connected to the inner wall of the first connecting seat. The third lead screw penetrates the upper and lower ends of the movable rod. The bottom end of the third lead screw is connected to a second spur gear. The second spur gear intermittently meshes with the outer walls of the first rack and the second rack.

[0015] As a further scheme of the present invention: A transverse chute that matches the horizontal movement track of the protruding parts at the bottom ends of the first connecting seat and the second connecting seat is provided on the outer wall of the top end of the base. The transverse chute is used to limit the movement direction of the first connecting seat and the second connecting seat.

[0016] As a further solution of the present invention: the inner walls of the bottom protrusions of the first connecting seat and the second connecting seat are provided with threads matching the outer walls of the first screw rod and the second screw rod, and the outer wall threads of the first screw rod and the second screw rod are in opposite states.

[0017] As a further solution of the present invention: the inner wall of the first connecting seat is provided with a groove matching the rotation trajectory of the positioning rod, and the chain is engaged with the positioning rod through a sprocket sleeve.

[0018] As a further solution of the present invention: the outer wall of the movable rod is in a "丩"-shaped structure, the outer wall of the limiting rod is in an "F"-shaped structure, and the outer wall of the limiting rod matches the inner cavity of the movable rod.

[0019] As a further solution of the present invention: the inner wall of the movable rod is provided with a thread groove matching the thread of the outer wall of the third screw rod, the outer wall of the first connecting seat is provided with a rotation groove matching the rotation trajectory of the limit rod, the upper part of the inner cavity of the rotation groove is provided with a bevel groove, the inner wall of the positioning rod is provided with a groove matching the vertical movement trajectory of the protrusion at one end of the limit rod, the two protrusions at one end of the movable rod are larger at the top and smaller at the bottom, and the inner cavity of the movable rod coincides with one end of the limit rod.

[0020] Compared with the prior art, the present invention has the following beneficial effects:

[0021] By setting up a transmission mechanism and a limiting mechanism, when the spring is produced and processed, the movement of the first connecting seat can limit the material, and the second connecting seat gradually moves away from the first connecting seat. At the same time, the movement of the first connecting seat drives the positioning rod to rotate, so that the spring is wrapped around the outer wall of the positioning rod in a threaded shape. When the first connecting seat moves to a certain position, the spring is formed, and the continued movement of the first connecting seat will also cause the inner cavity of the second connecting seat to separate from the outer wall of the positioning rod, and there is an end distance, and the limiting rod no longer limits one end of the spring tooth material, thereby completing the production of the spring, reducing the driving unit, and automatically releasing the limit on the positioning rod and the spring. BRIEF DESCRIPTION OF THE DRAWINGS

[0022] Figure 1 It is a structural schematic diagram of the present invention;

[0023] Figure 2 This is a partial enlarged view of point A of the present invention;

[0024] Figure 3 It is a structural schematic diagram of the transmission mechanism of the present invention;

[0025] Figure 4 This is a partial enlarged view of point B of the present invention;

[0026] Figure 5Schematic structural diagram of the limit mechanism of the present invention;

[0027] Figure 6 Schematic structural diagram of the limit rod of the present invention;

[0028] Figure 7 Schematic distribution structure diagram of the first rack and the second rack of the present invention;

[0029] Figure 8 Schematic structural diagram of the internal rotating groove of the first connecting seat of the present invention.

[0030] In the figure: 1, base; 2, first connecting seat; 3, second connecting seat; 4, third connecting seat; 5, positioning rod; 6, transmission mechanism; 601, servo motor; 602, first lead screw; 603, first spur gear; 604, rotating rod; 605, gear column; 606, passive runner; 607, chain; 608, second lead screw; 7, limit mechanism; 701, first rack; 702, second rack; 703, third lead screw; 704, second spur gear; 705, movable rod; 706, limit rod. Detailed implementation manners

[0031] Next, the technical solutions in the embodiments of the present invention will be clearly and completely described in conjunction with the accompanying drawings in the embodiments of the present invention. Obviously, the described embodiments are only a part of the embodiments of the present invention, rather than all of the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by those of ordinary skill in the art without creative efforts shall fall within the protection scope of the present invention.

[0032] Please refer to Figures 1 to 8 , in the embodiment of the present invention, a production process of a spring for a mattress includes the following steps:

[0033] S1, fixing the spring steel on the positioning rod through the limiting unit;

[0034] S2, winding the spring rod around the positioning rod by starting the driving unit to make the spring steel in a spiral shape;

[0035] S2, releasing the limit on the spiral spring steel and using a cutting tool to cut the redundant part of the processed spring steel;

[0036] S2, performing strength detection on the cut spring steel;

[0037] Among the tools used in steps S1 and S2, there is a base 1. Symmetrically installed at the top of the base 1 are a first connecting seat 2 and a second connecting seat 3. A positioning rod 5 is rotatably connected to one side of the outer wall of the first connecting seat 2 close to the second connecting seat 3. It is characterized in that there is a transmission mechanism 6 installed inside the base 1 and extending into the first connecting seat 2. The transmission mechanism 6 includes a servo motor 601 installed inside the base 1. The output end of the servo motor 601 is connected to a first lead screw 602 that penetrates the protruding part at the bottom end of the first connecting seat 2. One end of the first lead screw 602 is connected to a second lead screw 608 that penetrates the protruding part at the bottom end of the second connecting seat 3;

[0038] A limiting mechanism 7 is arranged on the outer wall of the first connecting seat 2 and extends into the first connecting seat 2. The limiting mechanism 7 includes a first rack 701 and a second rack 702 that are installed on the outer wall of the top of the base 1 and are staggered near one end of the first connecting seat 2. The tooth blocks on the outer walls of the first rack 701 and the second rack 702 are close to each other, and the first rack 701 and the second rack 702 are far from each other. The limiting mechanism 7 also includes a movable rod 705 slidably arranged in the inner cavity of the first connecting seat 2. A limiting rod 706 is rotatably connected to the outer wall of the first connecting seat 2. One end of the limiting rod 706 is located in the inner cavity of the movable rod 705;

[0039] A third connecting seat 4 for limiting the conveyance of materials is also installed at the top of the base 1. The third connecting seat 4 is located on one side of the first connecting seat 2 and the second connecting seat 3;

[0040] A transverse chute matching the transverse movement trajectories of the protruding parts at the bottom ends of the first connecting seat 2 and the second connecting seat 3 is provided on the outer wall of the top of the base 1. The transverse chute is used to limit the moving directions of the first connecting seat 2 and the second connecting seat 3.

[0041] In this embodiment: When using this device, by pulling one end of the spring steel out from the limiting position of the third connecting seat 4 so that one end of the spring steel enters the inner cavity of the end of the limiting rod 706, then when the servo motor 601 is started, the servo motor 601 works to drive the first lead screw 602 and the second lead screw 608 to rotate. The rotation of the first lead screw 602 and the second lead screw 608 will drive the first connecting seat 2 and the second connecting seat 3 to move away from each other, and at the same time drive the transmission components of the transmission mechanism 6 to work, causing the positioning rod 5 to rotate, thereby winding the spring steel around the outer wall of the positioning rod 5. And during the movement of the first connecting seat 2, the transmission components of the limiting mechanism 7 will contact the second rack 702, causing the movable rod 705 to move downward, thereby driving the limiting rod 706 to move downward synchronously, so as to limit the spring steel stuck in the inner cavity of the limiting rod 706.

[0042] Please refer specifically to Figures 2 - 8, the transmission mechanism 6 further includes a first spur gear 603 fixed to the outer wall of the first lead screw 602. The transmission mechanism 6 further includes a rotating rod 604 that is horizontally slidably connected to the top end of the base 1 through a mounting bracket. One end of the rotating rod 604 is connected to a gear column 605. The gear column 605 meshes with the outer wall of the top end of the first spur gear 603. One end of the gear column 605 is fixedly connected to a passive runner 606. The passive runner 606 is rotatably connected to the inner wall of the first connecting seat 2. A chain 607 is sleeved and meshed in the inner cavity of the passive runner 606;

[0043] The limiting mechanism 7 further includes a third lead screw 703 rotatably connected to the inner wall of the first connecting seat 2. The third lead screw 703 penetrates through the upper and lower ends of the movable rod 705. The bottom end of the third lead screw 703 is connected to a second spur gear 704. The second spur gear 704 intermittently meshes with the outer walls of the first rack 701 and the second rack 702.

[0044] In this embodiment: by pulling one end of the spring steel out from the limit position of the third connecting seat 4, one end of the spring steel enters the end cavity of the limit rod 706, then when the servo motor 601 is started, the servo motor 601 will drive the first screw rod 602 and the second screw rod 608 to rotate, and the rotation of the first screw rod 602 and the second screw rod 608 will drive the first connecting seat 2 and the second connecting seat 3 to move away from each other, and at the same time drive the rotating rod 604 as the transmission component of the transmission mechanism 6 to rotate, the rotation of the first straight gear 603 will drive the gear column 605, the rotating rod 604, and the passive rotating wheel 606 to rotate synchronously, and the rotation of the passive rotating wheel 606 will drive the chain 607 to transmit the torque to The sprocket on the outer wall of the positioning rod 5 will drive the positioning rod 5 to rotate, thereby winding the spring steel around the outer wall of the positioning rod 5, and in the process of moving the first connecting seat 2, the second spur gear 704 serving as the transmission component of the limiting mechanism 7 will contact the second rack 702, and the second spur gear 704 will rotate under the external thrust, and the rotation of the second spur gear 704 will drive the third screw rod 703 to rotate, thereby driving the movable rod 705 to move downward along the outer wall of the third screw rod 703, thereby driving the limiting rod 706 to move downward synchronously, and the outer wall of the limiting rod 706 will contact the upper inclined groove of the rotating groove on the inner wall of the first connecting seat 2, so that the limiting rod 706 moves downward until it enters the rotating groove, and at the same time, the end of the movable rod 705 The inner cavity will also be filled to the notch position of the rotating groove for the limit rod 706 to rotate, thereby limiting the spring steel stuck in the inner cavity of the limit rod 706. When the spring rod winding process is completed, the spring steel located in the limit cavity of the third connecting seat 4 is about to break away from the third connecting seat 4. At this time, the vibration of the spring steel will be partially absorbed by the second connecting seat 3, increasing the stability of the first connecting seat 2 and the positioning rod 5. At the same time, the second connecting seat 3 will also break away from the outer wall of the positioning rod 5, and the continued operation of the first screw rod 602 and the second screw rod 608 will also make the first connecting seat 2 and the second connecting seat 3 continue to move away until there is a gap between the positioning rod 5 and the second connecting seat 3 that is sufficient to take out the product. At this time, the second spur gear 704 will also be with The first rack 701 is in contact with the first rack 701 and the second rack 702. Since the tooth blocks on the first rack 701 and the second rack 702 are symmetrically distributed, the thrust received by the second spur gear 704 at this time is in the opposite direction of the thrust from the second rack 702, and the outer wall of the limit rod 706 will also enter the end cavity of the movable rod 705 in the last circle of rotation. Since the two protrusions at one end of the movable rod 705 are in a structure with the upper part larger and the lower part smaller, when the movable rod 705 moves upward, its lower protrusion will give the limit rod 706 an upward thrust, causing the limit rod 706 to rotate along the inner cavity of the movable rod 705 until the movable rod 705 moves upward, which will drive the limit rod 706 to reset, thereby releasing the limit on the end of the spring steel.

[0045] Please refer to Figures 2 - 8The inner walls of the protruding parts at the bottom ends of the first connecting seat 2 and the second connecting seat 3 are provided with threads that match the outer walls of the first screw rod 602 and the second screw rod 608. The outer wall threads of the first screw rod 602 and the second screw rod 608 are in opposite states. The inner wall of the first connecting seat 2 is provided with a groove that matches the rotation trajectory of the positioning rod 5, and the chain 607 is engaged with the positioning rod 5 through a sprocket sleeve.

[0046] In this embodiment: after the spring rod winding process is completed, the spring steel located in the limiting cavity of the third connecting seat 4 will be separated from the transmission mechanism 6. At this time, the vibration of the spring steel will be partially absorbed by the second connecting seat 3, increasing the stability of the first connecting seat 2 and the positioning rod 5. At the same time, the second connecting seat 3 will also be separated from the outer wall of the positioning rod 5, and the continued operation of the first screw rod 602 and the second screw rod 608 will also make the first connecting seat 2 and the second connecting seat 3 continue to move away until there is a gap between the positioning rod 5 and the second connecting seat 3 that is sufficient to take out the product.

[0047] Please refer to Figures 2 - 8 The outer wall of the movable rod 705 is in a "丩"-shaped structure, and the outer wall of the limiting rod 706 is in an "F"-shaped structure. The outer wall of the limiting rod 706 matches the inner cavity of the movable rod 705, and the inner wall of the movable rod 705 is provided with a thread groove that matches the outer wall thread of the third screw rod 703. The outer wall of the first connecting seat 2 is provided with a rotation groove that matches the rotation trajectory of the limiting rod 706, and the upper part of the inner cavity of the rotation groove is provided with a bevel groove. The inner wall of the positioning rod 5 is provided with a groove that matches the vertical movement trajectory of the protrusion at one end of the limiting rod 706. The two protrusions at one end of the movable rod 705 are larger at the top and smaller at the bottom, and the inner cavity of the movable rod 705 coincides with one end of the limiting rod 706.

[0048] In this embodiment: when the second spur gear 704 contacts the first rack 701, since the tooth blocks on the first rack 701 and the second rack 702 are symmetrically distributed, the thrust received by the second spur gear 704 at this time is in the opposite direction of the thrust from the second rack 702, and the outer wall of the limit rod 706 will also enter the end cavity of the movable rod 705 in the last circle of rotation. Since the two protrusions at one end of the movable rod 705 are in a structure with a larger upper part and a smaller lower part, when the movable rod 705 moves upward, its lower protrusion will give the limit rod 706 an upward thrust, causing the limit rod 706 to rotate along the inner cavity of the movable rod 705 until the movable rod 705 moves upward, which will drive the limit rod 706 to reset, thereby releasing the limit on the end of the spring steel.

[0049] The above is only a preferred specific embodiment of the present invention, but the scope of protection of the present invention is not limited thereto. Any technician familiar with this technical field, within the technical scope disclosed by the present invention, who makes equivalent replacements or changes based on the technical solutions and inventive concepts of the present invention, should be covered by the scope of protection of the present invention.

Claims

1. A production process for a spring used in a mattress, comprising the following steps: S1, fixing the spring steel on the positioning rod through a limiting unit; S2, winding the spring rod around the positioning rod by starting the driving unit to make the spring steel in a spiral shape; S2, releasing the limit on the spiral spring steel and using a cutting tool to cut the excess part of the processed spring steel; S2, performing a strength test on the cut spring steel; Among them, the tools used in steps S1 and S2 include a base (1). Symmetrically installed on the top end of the base (1) are a first connecting seat (2) and a second connecting seat (3). The outer wall of the first connecting seat (2) is rotatably connected to a positioning rod (5) on one side close to the second connecting seat (3). It is characterized in that there is a transmission mechanism (6) installed inside the base (1) and extending into the first connecting seat (2). The transmission mechanism (6) includes a servo motor (601) installed inside the base (1). The output end of the servo motor (601) is connected to a first lead screw (602) passing through the protruding part at the bottom end of the first connecting seat (2). One end of the first lead screw (602) is connected to a second lead screw (608) passing through the protruding part at the bottom end of the second connecting seat (3); A limiting mechanism (7) provided on the outer wall of the first connecting seat (2) and extending into the first connecting seat (2). The limiting mechanism (7) includes a first rack (701) and a second rack (702) installed on the top outer wall of the base (1) and distributed alternately at one end close to the first connecting seat (2). The tooth blocks on the outer walls of the first rack (701) and the second rack (702) are close to each other, and the first rack (701) and the second rack (702) are far from each other. The limiting mechanism (7) also includes a movable rod (705) slidably arranged in the inner cavity of the first connecting seat (2). The outer wall of the first connecting seat (2) is rotatably connected to a limiting rod (706). One end of the limiting rod (706) is located in the inner cavity of the movable rod (705); A third connecting seat (4) for limiting the conveyance of materials is also installed on the top end of the base (1). The third connecting seat (4) is located on one side of the first connecting seat (2) and the second connecting seat (3); The transmission mechanism (6) also includes a first spur gear (603) fixed on the outer wall of the first lead screw (602). The transmission mechanism (6) also includes a rotating rod (604) horizontally slidably connected to the top end of the base (1) through a mounting bracket. One end of the rotating rod (604) is connected to a gear column (605). The gear column (605) meshes with the top outer wall of the first spur gear (603). One end of the gear column (605) is fixedly connected to a passive runner (606). The passive runner (606) is rotatably connected to the inner wall of the first connecting seat (2). A chain (607) is sleeved and meshed in the inner cavity of the passive runner (606); The limiting mechanism (7) also includes a third screw rod (703) rotatably connected to the inner wall of the first connecting seat (2), the third screw rod (703) passes through the upper and lower ends of the movable rod (705), and the bottom end of the third screw rod (703) is connected to a second spur gear (704), and the second spur gear (704) intermittently meshes with the outer walls of the first rack (701) and the second rack (702).

2. The production process of a spring for a mattress according to claim 1, characterized in that, The top outer wall of the base (1) is provided with a slide groove that matches the lateral movement trajectory of the protruding parts at the bottom ends of the first connecting seat (2) and the second connecting seat (3), and the slide groove is used to limit the movement direction of the first connecting seat (2) and the second connecting seat (3).

3. The production process of a spring for a mattress according to claim 1, characterized in that, The inner walls of the protruding portions at the bottom ends of the first connecting seat (2) and the second connecting seat (3) are provided with threads that match the outer walls of the first screw rod (602) and the second screw rod (608), and the outer wall threads of the first screw rod (602) and the second screw rod (608) are in opposite states.

4. The production process of a spring for a mattress according to claim 1, characterized in that, The inner wall of the first connecting seat (2) is provided with a groove that matches the rotation trajectory of the positioning rod (5), and the chain (607) is engaged with the positioning rod (5) through a sprocket sleeve.

5. The production process of a spring for a mattress according to claim 1, characterized in that, The outer wall of the movable rod (705) is in a "丩"-shaped structure, and the outer wall of the limiting rod (706) is in an "F"-shaped structure. The outer wall of the limiting rod (706) matches the inner cavity of the movable rod (705).

6. The production process of a spring for a mattress according to claim 1, characterized in that, The inner wall of the movable rod (705) is provided with a thread groove matching the thread of the outer wall of the third screw rod (703), the outer wall of the first connecting seat (2) is provided with a rotation groove matching the rotation trajectory of the limiting rod (706), the upper part of the inner cavity of the rotation groove is provided with an inclined groove, the inner wall of the positioning rod (5) is provided with a groove matching the vertical movement trajectory of the protrusion at one end of the limiting rod (706), the two protrusions at one end of the movable rod (705) are in a state of being larger at the top and smaller at the bottom, and the inner cavity of the movable rod (705) is consistent with one end of the limiting rod (706).

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