A spring cloth bag edge welding machine

Abstract

The present invention provides a spring cloth bag edge welding machine, which includes a frame, a first feeding mechanism, a first welding mechanism, a second feeding mechanism, a second welding mechanism and a third feeding mechanism sequentially arranged on the frame. The first feeding mechanism includes a first welding head, and the second feeding mechanism includes a second welding head. Helical teeth are provided at the ends of the first welding head and the second welding head. With the perfect equipment of the present invention, a single-strip bagged spring can be smoothly welded into a double-strip fixed-length bagged spring, and the processing efficiency of the equipment is high. By setting helical teeth at the welding head, the strength is improved, and a stronger edge can be welded under the same pressure, reducing the cost of the equipment. The first welding mechanism and the second welding mechanism move synchronously with the bagged spring during welding. Through the feeding of the first feeding mechanism, the second feeding mechanism and the third feeding mechanism, the smooth conveying of the bagged spring is ensured, and the welding efficiency is ensured.

Description

Technical Field

[0001] The present invention relates to the technical field of machinery for bagged spring mattresses, and particularly refers to a spring bag edge sealing and welding machine. Background Art

[0002] A bagged spring is formed by continuously and intermittently wrapping and encapsulating individual spring units in a cloth bag. Each bagged spring unit is connected in sequence to form a bagged spring string. Arranging and bonding the bagged spring strings together forms a bagged spring mattress core. Bagged springs usually refer to individual bagged spring units or bagged spring strings.

[0003] In order to reduce the amount of glue used, Chinese Patent: Double-row Bagged Springs and Their Encapsulation Devices, Methods, and Manufacturing Equipment, Patent Publication No.: CN111170262A, Publication Date: May 19, 2020, discloses welding single springs into double spring strings by welding, and then bonding them together with glue. This method can reduce the amount of glue used by half.

[0004] However, the current edge sealing and welding equipment is not mature, and errors often occur during the welding process; the strength between the edge seals is low, and during the welding process, the springs exert pressure on the edge seals, easily squeezing open the edge seals. Therefore, it can only be solved by increasing the air pressure of the welding equipment or adding a booster cylinder, but this undoubtedly increases the cost of the equipment. Summary of the Invention

[0005] In view of the above problems, the present invention provides a spring bag edge sealing and welding machine to solve one or more technical problems existing in the prior art, and at least provide a beneficial alternative or create conditions.

[0006] To achieve the above object, the technical solution adopted by the present invention is as follows:

[0007] A spring cloth bag edge welding machine, comprising a frame, a first feeding mechanism, a first welding mechanism, a second feeding mechanism, a second welding mechanism and a third feeding mechanism sequentially arranged on the frame, characterized in that: the first feeding mechanism includes two groups of synchronously and oppositely arranged synchronous belt mechanisms, and a first feeding motor for driving the two synchronous belt mechanisms; the third feeding mechanism includes two groups of oppositely arranged limiting rollers, two groups of discharging rollers and a third feeding motor for driving the two discharging rollers to rotate synchronously, the position of the limiting rollers can be adjusted along the width direction of the frame; the first welding mechanism includes a first welding frame slidably arranged along the length direction of the frame, the first welding frame is driven by a first moving cylinder installed on the frame, and a first welding head and a first welding seat driven by a cylinder are oppositely arranged on the first welding frame; the second welding mechanism includes a second welding frame slidably arranged along the length direction of the frame, the second welding frame is driven by a second moving cylinder installed on the frame, and a second welding head and a second welding seat driven by a cylinder are oppositely arranged on the second welding frame, and a blade is arranged in the middle of the second welding head, and the blade slightly extends out of the end of the second welding head; inclined teeth are arranged at the ends of the first welding head and the second welding head.

[0008] Preferably, the third feeding mechanism includes a third feeding frame, two oppositely arranged adjusting frames are arranged on the third feeding frame, and two of the limiting rollers are rotatably arranged on each adjusting frame, and the position of the adjusting frame can be adjusted along the width direction of the frame through a fastening bolt.

[0009] Preferably, the discharging rollers are rotatably arranged on the third feeding frame, and the two discharging rollers are located behind the limiting rollers.

[0010] Preferably, a knife groove for the blade to enter is arranged on the second welding seat.

[0011] Preferably, the first feeding mechanism includes a first feeding frame, the synchronous belt mechanism includes synchronous belts arranged up and down, the synchronous belts are horizontally arranged, synchronous rollers arranged at intervals between the two synchronous belts arranged up and down, the synchronous belts are sleeved between synchronous wheels, and the first feeding motor is connected to the two synchronous wheels through a gear set.

[0012] Preferably, the second welding frame is connected to the frame through a dovetail groove, a first second welding cylinder is fixedly installed at one end of the second welding frame, the second welding head is connected to the second welding frame through two guide rods, the working end of the first second welding cylinder is connected to the middle of the second welding head, a second second welding cylinder is fixedly installed at the other end of the second welding frame, the working end of the second second welding cylinder is connected to a second welding sliding seat slidably arranged on the second welding frame, and a push rod is fixed on the second welding sliding seat, and the push rod is connected to the middle of the second welding seat.

[0013] Advantages of the present invention:

[0014] With the perfect equipment of the present invention, a single-strip bagged spring can be successfully welded into a double-strip fixed-length bagged spring, and the equipment has high processing efficiency; by setting helical teeth at the welding head, the strength of the edge sealing is improved, and a stronger edge sealing can be welded under the same pressure, reducing the cost of the equipment; the first welding mechanism and the second welding mechanism move synchronously with the bagged spring during welding. Through the feeding of the first feeding mechanism, the second feeding mechanism and the third feeding mechanism, the smooth feeding of the bagged spring is ensured, and the welding efficiency is ensured. Brief description of the drawings

[0015] Figure 1 is the perspective view of this embodiment;

[0016] Figure 2 is the perspective view of another angle of this embodiment;

[0017] Figure 3 is the perspective view of this embodiment with part of the frame removed;

[0018] Figure 4 is the perspective view of the first feeding mechanism;

[0019] Figure 5 is the exploded view of the first feeding mechanism;

[0020] Figure 6 is the perspective view of the third feeding mechanism;

[0021] Figure 7 is the exploded view of the third feeding mechanism;

[0022] Figure 8 is the perspective view of the first welding mechanism;

[0023] Figure 9 is the perspective view of the second welding mechanism;

[0024] Figure 10 is the perspective view of another angle of the second welding mechanism. Detailed implementation manners

[0025] The technical solutions of the present invention will be described below in conjunction with the drawings and embodiments.

[0026] Refer to Figures 1 to 10, a spring cloth bag edge welding machine according to the present invention includes a frame 1, a first feeding mechanism 2, a first welding mechanism 3, a second feeding mechanism 4, a second welding mechanism 5, and a third feeding mechanism 6 sequentially arranged on the frame 1. The first feeding mechanism 2 includes a first feeding frame 21 and two sets of synchronous belt mechanisms arranged synchronously and oppositely. The synchronous belt mechanism includes synchronous belts 22 arranged vertically, the synchronous belts 22 are horizontally arranged, the synchronous belts 22 are sleeved between two horizontally arranged synchronous wheels 23, the two vertically corresponding synchronous wheels 23 are connected by a rotating shaft, and further includes synchronous rollers 24 arranged at intervals between the two vertically arranged synchronous belts 22, and a first feeding motor 25 for driving the synchronous wheels 23. The first feeding motor 25 is connected to the two synchronous wheels 23 through transmission gears. The first feeding motor 25 drives the synchronous wheels 23 of the two sets of synchronous belt mechanisms to rotate, thereby driving the synchronous belts 22 to move. The synchronous belts 22 drive the synchronous rollers 24 to move. An interval plate 26 is provided between the two corresponding synchronous rollers 24 on the two sets of synchronous belt mechanisms. The distance between each synchronous roller 24 and the interval plate 26 is less than the outer diameter of the bagged spring. Therefore, the two synchronous rollers 24 can drive a single bagged spring to move separately. It should be noted here that the structures of the first feeding mechanism 2 and the second feeding mechanism 4 are basically the same. The second feeding mechanism 4 lacks the interval plate 26 compared with the first feeding mechanism 2. Because there is no need for an interval plate 26 between two welded separate bagged springs, only the structure of the first feeding mechanism 2 is described, and the second feeding mechanism 4 will not be repeated.

[0027] Specifically, the third feeding mechanism 6 includes a third feeding frame 61. Two relatively arranged adjusting frames 62 are provided on the third feeding frame 61. Two sets of limiting rollers 63 are rotatably provided on each adjusting frame 62. The two sets of limiting rollers 63 are arranged along the length direction of the frame 1. The adjusting frame 62 can adjust its position along the width direction of the frame 1 through a fastening bolt. Two sets of relatively arranged discharging rollers 64 are provided behind the limiting rollers 63. The discharging rollers 64 are rotatably provided on the third feeding frame 61. The two sets of discharging rollers 64 are connected by gears. A third feeding motor 65 is further provided below the third feeding frame 61. The third feeding motor 65 is connected to one of the discharging rollers 64. In order to facilitate the conveying of the bagged spring, a supporting plate 66 penetrates between the two adjusting frames 62 and between the two discharging rollers 64. The bagged spring is conveyed above the supporting frame 66.

[0028] Specifically, the first welding mechanism 3 includes a first welding frame 31 slidably arranged along the length direction of the frame 1. The first welding frame 31 is driven by a first moving cylinder 32 installed on the frame 1. The speed at which the first moving cylinder 32 drives the welding frame 1 to move is equivalent to the conveying speed of the bagged spring, so that the bagged spring can be welded while being conveyed. Oppositely arranged on the first welding frame 31 are a first welding head 33 and a first welding seat 34 driven by cylinders.

[0029] Specifically, the second welding mechanism 5 includes a second welding frame 51 slidably arranged along the length direction of the frame 1. The second welding frame 51 is connected to the frame 1 through a dovetail groove. The second welding frame 51 is driven by a second moving cylinder 52 installed on the frame 1, so that the second welding mechanism 5 can perform welding operations along with the movement of the bagged spring. Oppositely arranged on the second welding frame 51 are a second welding head 53 and a second welding seat 54 driven by cylinders. Specifically, a first second welding cylinder 55 is fixedly installed at one end of the second welding frame 51. The second welding head 53 is connected to the second welding frame 51 through two guide rods. The working end of the first second welding cylinder 55 is connected to the middle of the second welding head 53. A second second welding cylinder 56 is fixedly installed at the other end of the second welding frame 51. The working end of the second second welding cylinder 56 is connected to a second welding sliding seat 57 slidably arranged on the second welding frame 51. A push rod 58 is fixed on the second welding sliding seat 57. The push rod 58 is connected to the middle of the second welding seat 54. The purpose of such a design is to make the acting force of the first second welding cylinder 55 act on the middle of the second welding head 53, ensuring that the second welding head 53 is evenly stressed and moves smoothly. At the same time, the acting force of the second second welding cylinder 56 acts on the middle of the second welding seat 54, also to make the second welding seat 54 move smoothly and be evenly stressed. In addition to welding the bagged spring, the second welding mechanism 5 also needs to cut the bagged spring. Therefore, a blade 59 is also provided in the middle of the second welding head 53. The blade 59 slightly protrudes from the end of the second welding head 53. A knife groove (not marked in the figure) for the blade 59 to enter is provided on the second welding seat 54. In this way, the blade 59 and the knife groove cooperate to cut the bagged spring. The second welding head 53 and the end of the second welding head 53 are both provided with helical teeth. The setting of the helical teeth can increase the welding length at the welding part, and the helical teeth can also increase the unit pressure between the second welding head 53 and the second welding seat 54. Under the same air pressure, the welding strength is better, and at the same time, the connection strength at the edge sealing is improved, avoiding the spring from squeezing open the edge sealing. The end of the helical tooth is flat and is used for docking with the plane of the welding head, which is beneficial to the integrity of the edge sealing. At the same time, in order to ensure the length of the edge sealing, the included angle between the helical tooth and the horizontal plane is between 30° and 60°.

[0030] In addition, the structure of the second welding mechanism 5 is the same as that of the first welding mechanism 3. The difference is that the first welding head 33 is not provided with a blade 59, and the first welding seat 34 is not provided with a blade groove either. The other structures are the same, so they will not be elaborated here.

[0031] In addition, in order to ensure the smooth conveyance of the pocket springs, a conveyance groove 7 is provided between the two mechanisms, with a width that can just accommodate two pocket springs vertically pressed against each other.

[0032] When the device is working: In order to make the pocket springs enter the first feeding mechanism 2 in an upright state, a plurality of guide rollers 8 are also provided at the front end of the feeding part of the frame 1. Two groups of pocket springs pass through the plurality of guide rollers 8, and are adjusted from the horizontally conveyed state to the upright conveyed state, and then enter the first feeding mechanism 2. They pass through the conveyance groove 7 from the first feeding mechanism 2, enter the first welding mechanism 3 for welding, then enter the second feeding mechanism 4 for feeding, then enter the second welding mechanism 5 for welding and cutting, and are then sent out from the third feeding mechanism 6. In this way, two separate pocket springs are welded and cut to form two pocket springs of a predetermined length welded together, and thus enter the next process of assembling the mattress.

[0033] The above has described an embodiment of the present invention in detail, but the content described is only the preferred embodiment of the present invention and cannot be considered as used to limit the scope of implementation of the present invention. All equivalent changes and improvements made according to the scope of the application of the present invention should still fall within the scope covered by the patent of the present invention.

Claims

1. A spring cloth bag edge welding machine, comprising a frame, a first feeding mechanism, a first welding mechanism, a second feeding mechanism, a second welding mechanism and a third feeding mechanism sequentially arranged on the frame, characterized in that: The first feeding mechanism includes two sets of synchronously and oppositely arranged synchronous belt mechanisms, and a first feeding motor for driving the two synchronous belt mechanisms. The third feeding mechanism includes two sets of oppositely arranged limiting rollers, two discharging rollers, and a third feeding motor for driving the two discharging rollers to rotate synchronously. The position of the limiting rollers can be adjusted along the width direction of the machine frame. The first welding mechanism includes a first welding machine frame slidably arranged along the length direction of the machine frame. The first welding machine frame is driven by a first moving cylinder installed on the machine frame. Oppositely arranged on the first welding machine frame are a first welding head and a first welding seat driven by a cylinder. The second welding mechanism includes a second welding machine frame slidably arranged along the length direction of the machine frame. The second welding machine frame is driven by a second moving cylinder installed on the machine frame. Oppositely arranged on the second welding machine frame are a second welding head and a second welding seat driven by a cylinder. A blade is also provided in the middle of the second welding head, and the blade slightly protrudes from the end of the second welding head. Helical teeth are provided at the ends of both the first welding head and the second welding head. The first feeding mechanism includes a first feeding machine frame. The synchronous belt mechanism includes synchronous belts arranged vertically. The synchronous belts are horizontally arranged, and synchronous rollers are arranged at intervals between the two vertically arranged synchronous belts. The synchronous belts are sleeved between synchronous wheels. The first feeding motor is connected to the two synchronous wheels through a gear set. The second welding machine frame is connected to the machine frame through a dovetail groove. A first second welding cylinder is fixedly installed at one end of the second welding machine frame. The second welding head is connected to the second welding machine frame through two guide rods. The working end of the first second welding cylinder is connected to the middle of the second welding head. A second second welding cylinder is fixedly installed at the other end of the second welding machine frame. The working end of the second second welding cylinder is connected to a second welding sliding seat slidably arranged on the second welding machine frame. A push rod is fixed on the second welding sliding seat, and the push rod is connected to the middle of the second welding seat.

2. The spring cloth bag edge welding machine according to claim 1, characterized in that: The third feeding mechanism includes a third feeding frame. Two oppositely arranged adjusting frames are provided on the third feeding frame. Two of the limiting rollers are rotatably provided on each adjusting frame. The position of the adjusting frame can be adjusted along the width direction of the machine frame through a fastening bolt.

3. The spring cloth bag edge welding machine according to claim 2, characterized in that: The discharging rollers are rotatably arranged on the third feeding frame, and the two discharging rollers are located behind the limiting rollers.

4. A spring cloth bag edge welding machine according to claim 1, characterized in that: A knife groove for the blade to enter is provided on the second welding seat.

Images