Vacuum rapid forming mold for foamed sponge

Abstract

The utility model relates to the field of sponge production devices, in particular to a foam sponge vacuum rapid forming mold which comprises a bottom plate, a rotating shaft is fixed to the upper portion of the bottom plate, a top plate rotationally connected with the rotating shaft is arranged on the rotating shaft, a plurality of annular baffles are arranged below the top plate, a plurality of threaded pipes are fixed to the baffles, and the threaded pipes are connected with the rotating shaft. Threaded pipes are arranged on the top plate, threaded rods are arranged at the positions, corresponding to the threaded pipes, of the top plate, penetrate through the threaded pipes and are in threaded connection with the threaded pipes, the threaded rods are driven by a motor to rotate, cover plates are fixed to the positions, corresponding to the baffles, of the top plate, supporting rods are further fixed to the top plate, and a plurality of rotating air cylinders are further arranged on the bottom plate. The tail ends of piston rods of the rotating air cylinders are rotationally connected with the supporting rods, and air pipes connected with a vacuum pump are fixed to the baffles. And after the sponge is foamed, the sponge is exposed on the bottom plate, so that the foamed sponge can be conveniently taken down.

Description

Technical Field

[0001] The invention relates to the field of sponge production devices, in particular to a vacuum rapid forming mold for foaming sponge. Background Art

[0002] At present, commonly used sponges are divided into three types according to their structure: high-density sponges, medium-density sponges, and low-density sponges. Among them, high-density sponges have many holes and are very full. Because of their good air permeability and elasticity, they are often used to make sound-absorbing cotton, sofa cushions, soft bags and other materials. The mold for foaming molding is a plastic foaming mold. The foaming mold directly fills the foaming resin into the mold, so that it melts under heat to form a gas-liquid saturated solution. Through nucleation, a large number of tiny bubble nuclei are formed, and the bubble nuclei grow to make foam plastic parts; there are three commonly used foaming methods: physical foaming, chemical foaming and mechanical foaming. During the foaming molding process, the foaming resin material needs to be heated and melted to fill it into the mold cavity. Patent application number: CN201821297336.9 discloses a sponge foaming mold assembly, including a lower template and an upper template. The top surface of the lower template has a mold cavity, and the upper template can also be flipped open along the top of the hinge shaft. In this way, after the upper template is driven to open by the cylinder, there will be a certain distance and flip angle between it and the lower template, and the molded sponge is taken out from the mold cavity. However, the cavity and the lower template of this type of foaming mold are an integral structure, so the finished product is embedded in the lower template, and it is difficult to take out during the process of taking out the finished product.

[0003] The present invention is proposed in view of the deficiencies in the prior art. Summary of the invention

[0004] The purpose of the present invention is to overcome the disadvantages of the prior art and provide a vacuum rapid prototyping mold for a foaming sponge.

[0005] The present invention can be implemented by the following technical solutions:

[0006] The invention discloses a vacuum rapid prototyping mold for a foaming sponge, comprising a bottom plate, a rotating shaft being fixed above the bottom plate, a top plate being rotatably connected to the rotating shaft being arranged on the rotating shaft, a plurality of annular baffles being arranged below the top plate, a plurality of threaded tubes being fixed on the baffles, screws being arranged at positions on the top plate corresponding to the threaded tubes, the screws passing through the threaded tubes and being threadably connected to the threaded tubes, the screws being driven to rotate by a motor, cover plates being fixed at positions on the top plate corresponding to the baffles, a support rod being fixed on the top plate, a plurality of rotating cylinders being arranged on the bottom plate, piston rod ends of the rotating cylinders being rotatably connected to the support rods, and air pipes connected to a vacuum pump being fixed on the baffles. The two sides of the baffle are sealed by the bottom plate and the cover plate. The bottom plate, the baffle and the cover plate form a cavity for sponge foaming. The heated material to be foamed is discharged into the cavity through the pipe on the baffle, and the cavity is evacuated by a vacuum pump. After the sponge foams for a period of time, the motor drives the screw to rotate. When the screw rotates, the threaded tube moves in the direction of the screw, and the baffle moves with the threaded tube. The baffle rises, and after the cover plate passes through the baffle, the foamed sponge is blocked between the cover plate and the bottom plate. After the baffle reaches the top of the cover plate, the rotating cylinder is started, the piston rod on the rotating cylinder is shortened, and the rotating cylinder pulls the support rod to rotate around the rotating axis. The top plate rotates with the support rod, and the cover plate rotates with the top plate. The cover plate is separated from the sponge, and the sponge is exposed on the bottom plate. The sponge is removed. After the sponge foams, the sponge is exposed on the bottom plate, which is convenient for removing the foamed sponge.

[0007] Preferably, gears are fixed on the screw rods, and the gears are connected by synchronous belts.

[0008] Preferably, a plurality of positioning tubes are fixed to the baffle plate, and positioning rods are fixed to positions on the top plate corresponding to the positioning tubes, and the positioning rods pass through the positioning tubes and are slidably connected to the positioning tubes.

[0009] Preferably, positioning plates are fixed on both sides of the baffle, a positioning cylinder is also fixed on the bottom plate at the position of the positioning plate, and a positioning block is fixed at the end of the piston rod of the positioning cylinder. After the baffle is covered on the bottom plate, the positioning cylinder is started, and the positioning block reaches the upper end of the positioning plate to support and fix the positioning plate.

[0010] Compared with the prior art, the present invention has the following advantages:

[0011] After the sponge is foamed, the sponge is exposed on the bottom plate, which makes it convenient to remove the foamed sponge. BRIEF DESCRIPTION OF THE DRAWINGS

[0012] The specific embodiments of the present invention are further described in detail below with reference to the accompanying drawings, wherein:

[0013] Figure 1 It is a structural schematic diagram of the present invention;

[0014] Figure 2 It is another structural schematic diagram of the present invention from another angle;

[0015] Figure 3 It is a schematic structural diagram of another embodiment of the present invention;

[0016] In the figure: 1, bottom plate; 2, baffle plate; 3, rotating shaft; 4, top plate; 5, cover plate; 6, threaded tube; 7, screw rod; 8, gear; 9, synchronous belt; 10, motor; 11, positioning tube; 12, positioning rod; 13, support rod; 14, rotating cylinder; 15, air pipe; 16, positioning plate; 17, positioning cylinder, 18, positioning block; DETAILED DESCRIPTION

[0017] The embodiments of the present invention are described in detail below with reference to the accompanying drawings:

[0018] Embodiment 1:

[0019] like Figure 1 to Figure 2 As shown, the present embodiment discloses a vacuum rapid prototyping mold for a foamed sponge, comprising a base plate 1, a rotating shaft 3 is fixed above the base plate 1, a top plate 4 rotatably connected to the rotating shaft 3 is arranged on the rotating shaft 3, a plurality of annular baffles 2 are arranged below the top plate 4, a plurality of threaded tubes 6 are fixed on the baffle 2, screws 7 are arranged at positions corresponding to the threaded tubes 6 on the top plate 4, the screws 7 pass through the threaded tubes 6 and are threadedly connected to the threaded tubes 6, the screws 7 are driven to rotate by a motor 10, cover plates 5 are fixed at positions corresponding to the baffles 2 on the top plate 4, a support rod 13 is also fixed on the top plate 4, a plurality of rotating cylinders 14 are also arranged on the base plate 1, the piston rod ends of the rotating cylinders 14 are rotatably connected to the support rods 13, and air pipes 15 connected to a vacuum pump are fixed on the baffles 2. The two sides of the baffle 2 are sealed by the bottom plate 1 and the cover plate 5. The bottom plate 1, the baffle 2 and the cover plate 5 form a sponge foaming cavity. The heated material to be foamed is discharged into the cavity through the pipe on the baffle 2, and the cavity is evacuated by a vacuum pump. After the sponge foams for a period of time, the motor 10 drives the screw 7 to rotate. When the screw 7 rotates, the threaded tube 6 moves in the direction of the screw 7, the baffle 2 moves with the threaded tube 6, the baffle 2 rises, and after the cover plate 5 passes through the baffle 2, the foamed sponge is blocked between the cover plate 5 and the bottom plate 1. After the baffle 2 reaches above the cover plate 5, the rotating cylinder 14 is started, the piston rod on the rotating cylinder 14 is shortened, and the rotating cylinder 14 pulls the support rod 13 to rotate around the rotating axis 3. The top plate 4 rotates with the support rod 13, and the cover plate 5 rotates with the top plate 4. The cover plate 5 is separated from the sponge, and the sponge is exposed on the bottom plate 1. The sponge is removed. After the sponge foams, the sponge is exposed on the bottom plate 1, which is convenient for removing the foamed sponge.

[0020] Among them, gears 8 are fixed on the screw rods 7, and the gears 8 are connected by a synchronous belt 9.

[0021] A plurality of positioning tubes 11 are fixed on the baffle plate 2 , and positioning rods 12 are fixed on the top plate 4 at positions corresponding to the positioning tubes 11 . The positioning rods 12 pass through the positioning tubes 11 at corresponding positions and are slidably connected with the positioning tubes 11 .

[0022] Embodiment 2:

[0023] like Figure 3 As shown, this embodiment discloses a vacuum rapid prototyping mold for foam sponge. Based on the structure and principle of embodiment 1, positioning plates 16 are fixed on both sides of the baffle 2 of this embodiment, and a positioning cylinder 17 is also fixed on the bottom plate 1 at the position of the positioning plate 16. The piston rod end of the positioning cylinder 17 is fixed with a positioning block 18. After the baffle 2 covers the bottom plate 1, the positioning cylinder 17 is started, and the positioning block 18 reaches the upper end of the positioning plate 16 to support and fix the positioning plate 16.

[0024] The above description is only a preferred embodiment of the present invention. It should be pointed out that for ordinary technicians in this technical field, various changes, modifications, substitutions and variations can be made to these embodiments without departing from the technical principles of the present invention. These changes, modifications, substitutions and variations should also be regarded as the scope of protection of the present invention.

Claims

1. A vacuum rapid prototyping mold for a foamed sponge, comprising a base plate, characterized in that: A rotating shaft is fixed above the bottom plate, a top plate rotatably connected to the rotating shaft is arranged on the rotating shaft, a plurality of annular baffles are arranged below the top plate, a plurality of threaded tubes are fixed on the baffles, screws are arranged at positions corresponding to the threaded tubes on the top plate, the screws pass through the threaded tubes and are threadedly connected to the threaded tubes, the screws are driven to rotate by a motor, cover plates are fixed at positions corresponding to the baffles on the top plate, a support rod is also fixed on the top plate, a plurality of rotating cylinders are also arranged on the bottom plate, the piston rod ends of the rotating cylinders are rotatably connected to the support rods, and air pipes connected to the vacuum pumps are fixed on the baffles.

2. The vacuum rapid prototyping mold for foamed sponge according to claim 1, characterized in that: Gears are fixed on the screw rods, and the gears are wound around by synchronous belts.

3. The vacuum rapid prototyping mold for foamed sponge according to claim 1, characterized in that: A plurality of positioning tubes are also fixed on the baffle plate, and positioning rods are also fixed on the top plate at positions corresponding to the positioning tubes. The positioning rods pass through the positioning tubes and are slidably connected to the positioning tubes.

4. The vacuum rapid prototyping mold for foamed sponge according to claim 1, characterized in that: Positioning plates are fixed on both sides of the baffle, a positioning cylinder is also fixed on the bottom plate at the position of the positioning plate, and a positioning block is fixed at the end of the piston rod of the positioning cylinder.

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