Cut-off device for production of air bag head comb rubber

Abstract

The utility model relates to the technical field of air bag comb rubber sheet cutting, in particular to a cutting device for air bag comb rubber sheet production, which comprises a vacuum access pipe mounted on a vacuum adsorption table, a moving mechanism arranged on the vacuum adsorption table, a mounting seat mounted on the moving mechanism, and a laser cutting head mounted on the mounting seat. An annular air pipe located on the outer side of the laser cutting head is installed at the bottom of the installation base through a connecting rod, an air inlet pipe is fixedly connected to the annular air pipe, and purging nozzles are installed at the bottom of the annular air pipe in an annular array mode. According to the rubber cutting device, the moving mechanism drives the laser cutting head to move to cut rubber, rubber of any size can be cut according to actual requirements, the universality of the device is improved, high-pressure airflow is guided into the annular air pipe through the air inlet pipe and sprayed out through the purging nozzle while cutting is conducted, melt generated at a cutting point is blown away, and the cutting efficiency is improved. An air cooling barrier is formed in the cutting area, the temperature of the cutting area is reduced, and the thermal shrinkage phenomenon caused by too high rubber temperature at the cutting position is avoided.

Description

Technical Field

[0001] This utility model relates to the field of cutting rubber sheets for airbag head combs, and in particular to a cutting device for producing rubber sheets for airbag head combs. Background Technology

[0002] Airbag combs are a common product in modern hair styling tools. Their core component, the "rubber," needs to possess uniform elasticity, precise dimensional accuracy, and smooth cut edges to ensure the airbag structure's seal and the stability of the comb teeth's installation. Rubber production typically includes processes such as mixing, extrusion molding, cooling and setting, and cutting. The precision of the cutting process directly affects the product qualification rate and production efficiency.

[0003] Currently, the drawbacks of traditional mechanical cutting technology are becoming increasingly apparent when processing highly elastic and flexible rubber sheets. Firstly, the squeezing and pulling between the blade and the rubber sheet during cutting easily leads to edge stretching deformation, burrs, and even tearing, severely affecting the airtightness and structural strength of the subsequent airbag molding. Secondly, the high viscosity of the rubber causes a large amount of debris to adhere to the blade, resulting in blade dulling and requiring frequent machine stops for cleaning, interrupting the production process and affecting continuous production. Thirdly, cutting rubber sheets of different sizes requires changing blades and adjusting parameters, making the operation complex and prone to human error. Utility Model Content

[0004] To address the shortcomings of existing technologies, this utility model provides a cutting device for producing rubber sheets for airbag combs, which solves the technical problems of existing mechanical cutting methods that easily lead to stretching and deformation of the rubber sheet edges, burrs or tears, and the need to repeatedly change the cutting tools when cutting rubber sheets of different sizes.

[0005] To solve the above-mentioned technical problems, this utility model provides the following technical solution: a cutting device for producing rubber for airbag head combs, including a vacuum inlet pipe installed on a vacuum adsorption table, a moving mechanism provided on the vacuum adsorption table, a mounting base installed on the moving mechanism, a laser cutting head installed on the mounting base, an annular air duct located outside the laser cutting head installed at the bottom of the mounting base via a connecting rod, an air inlet pipe fixedly connected to the annular air duct, and a blowing nozzle installed in a ring array at the bottom of the annular air duct, an adaptive edge pressing mechanism for locally pressing the edge of the rubber cutting part to prevent displacement, and a circulating cooling mechanism for cooling and shaping the laser-cut part.

[0006] A further improvement is that all the blowing nozzles are directed toward the cutting point of the laser cutting head and form an angle of 60°-80° with the surface of the rubber material on the vacuum adsorption table.

[0007] A further improvement is that the moving mechanism includes longitudinal guide rails symmetrically installed on both sides of the vacuum adsorption stage. Longitudinal chains are installed on both longitudinal guide rails. Transverse guide rails are installed at the ends of the two longitudinal chains. Transverse chains are installed on the transverse guide rails. A lifting platform is fixedly connected to the end of the transverse chains. A lead screw is rotatably connected to the lifting platform. A threaded slide is threadedly connected to the lead screw, and the threaded slide is connected to the mounting base. A motor that drives the lead screw to rotate is installed on the lifting platform.

[0008] A further improvement is that limit guide strips are symmetrically installed on both sides of the front of the lifting platform, and sliders are slidably connected to the limit guide strips, and the sliders are connected to the mounting base.

[0009] A further improvement is that the adaptive edge pressing mechanism includes a sliding sleeve installed at the bottom of the lifting platform, a compression spring fixedly connected to the top wall of the sliding sleeve, a sliding rod slidably connected to the bottom of the compression spring and the bottom of the sliding rod is equipped with a U-shaped frame, and an edge pressing roller is rotatably connected inside the U-shaped frame.

[0010] A further improvement is that both sides of the pressing roller have an arc surface structure, and the inside of the pressing roller has a hollow structure. The roller shafts at both ends are provided with through holes that pass through into the pressing roller, and bearings are installed in the through holes.

[0011] A further improvement is that a T-shaped guide rail is installed at the bottom of the transverse guide rail, a slide table is slidably connected to the T-shaped guide rail, a liquid storage tank is installed at the bottom of the slide table, and the liquid storage tank is connected to the lifting platform through a connecting block. The liquid storage tank is filled with coolant, a water pump is installed on the liquid storage tank, a delivery pipe is installed at the outlet of the water pump, and the end of the delivery pipe extends into a through hole and is rotatably connected to a bearing. A return pipe is rotatably connected to the bearing in the through hole of the roller shaft on the other side of the pressure roller, and the end of the return pipe extends into the liquid storage tank.

[0012] By means of the above technical solution, this utility model provides a cutting device for the production of airbag head comb rubber, which has at least the following beneficial effects:

[0013] 1. This utility model uses a moving mechanism to drive the laser cutting head to cut the rubber sheet. It can cut rubber sheets of any size and specification according to actual needs, improving the versatility of the device. At the same time as cutting, high-pressure airflow is introduced into the annular air duct through the air inlet pipe and sprayed out through the inclined blowing nozzle to blow away the molten material generated at the cutting point. It also forms an air cooling barrier in the cutting area to reduce the temperature of the cutting area and prevent the rubber sheet from overheating and shrinking.

[0014] 2. This utility model uses the movement of the lifting platform to drive the pressure roller at its bottom to move synchronously with the laser cutting head, thereby pressing the edge of the laser cutting head, thus avoiding the rubber displacement from affecting the cutting accuracy. Moreover, when facing rubber of different thicknesses, the compression spring is compressed by the thrust transmitted from the pressure roller, thereby adaptively pressing the edge of rubber of different thicknesses and improving the versatility of the mechanism.

[0015] 3. As the pressure roller moves along the laser cutting path, the water pump is activated to pump the coolant in the storage tank into the pressure roller through the delivery pipe to quickly cool and shape the cut area, preventing the cut edge from lifting and affecting the precision of the finished product. The coolant after heat exchange flows back through the return pipe, realizing the circulation of coolant for cooling and shaping. Attached Figure Description

[0016] The accompanying drawings, which are provided to further illustrate this application and form part of this application, illustrate exemplary embodiments of this application and are used to explain this application, but do not constitute an undue limitation of this application.

[0017] In the attached diagram:

[0018] Figure 1 This is a schematic diagram of the overall structure of this utility model;

[0019] Figure 2 This is a side view of the mobile mechanism and its superstructure of the present invention;

[0020] Figure 3 This is a schematic diagram of the laser cutting part of this utility model;

[0021] Figure 4 This is an independent schematic diagram of the lifting platform and its partial structures of the present invention;

[0022] Figure 5 This is a partial cross-sectional view of the adaptive edge pressing mechanism and the cyclic cooling mechanism of this utility model.

[0023] In the diagram: 1. Vacuum adsorption stage; 2. Vacuum inlet pipe;

[0024] 3. Moving mechanism; 31. Longitudinal guide rail; 32. Longitudinal chain; 33. Transverse guide rail; 34. Transverse chain; 35. Lifting platform; 36. Lead screw; 37. Threaded slide; 38. Motor; 39. Limit guide bar; 310. Slider;

[0025] 4. Mounting base; 5. Laser cutting head; 6. Circular air duct; 7. Air inlet duct; 8. Blowing nozzle;

[0026] 9. Adaptive edge pressing mechanism; 91. Sliding sleeve; 92. Compression spring; 93. Slide rod; 94. U-shaped frame; 95. Edge pressing roller;

[0027] 10. Circulating cooling mechanism; 101. T-shaped guide rail; 102. Slide table; 103. Liquid storage tank; 104. Water pump; 105. Infusion pipe; 106. Return pipe. Detailed Implementation

[0028] The technical solutions of the present utility model will be clearly and completely described below with reference to the accompanying drawings of the embodiments. Obviously, the described embodiments are only some embodiments of the present utility model, and not all embodiments. Based on the embodiments of the present utility model, all other embodiments obtained by those of ordinary skill in the art without creative effort are within the protection scope of the present utility model.

[0029] Example 1

[0030] Given the existing technology where mechanical cutting easily leads to edge stretching, deformation, burrs, or tearing of rubber sheets, and the need for repeated tool changes when cutting rubber sheets of different sizes, this embodiment provides a cutting device for producing airbag head comb rubber sheets. This device uses a laser cutting head 5 to cut the rubber sheets, avoiding the problems of edge stretching, deformation, burrs, or tearing caused by mechanical cutting. Furthermore, it eliminates the need for repeated machine shutdowns to change tools, allowing for the cutting of rubber sheets of any size, thus improving the versatility and efficiency of rubber sheet production. Please refer to... Figures 1-5 The cutting device for producing rubber for airbag head combs includes a vacuum inlet pipe 2 installed on a vacuum adsorption table 1. A moving mechanism 3 is provided on the vacuum adsorption table 1. A mounting base 4 is installed on the moving mechanism 3. A laser cutting head 5 is installed on the mounting base 4. An annular air duct 6 located outside the laser cutting head 5 is installed at the bottom of the mounting base 4 via a connecting rod. An air inlet pipe 7 is fixed to the annular air duct 6. Blowing nozzles 8 are installed in a ring array at the bottom of the annular air duct 6. An adaptive edge pressing mechanism 9 is provided on the moving mechanism 3 to locally press the edge of the rubber cutting part to prevent displacement. A circulating cooling mechanism 10 is provided on the moving mechanism 3 to cool and shape the laser-cut part.

[0031] All the blowing nozzles 8 are directed toward the cutting point of the laser cutting head 5 and form an angle of 60°-80° with the surface of the rubber material on the vacuum adsorption table 1. The rubber is placed on the vacuum adsorption table 1, and the vacuum pump is connected through the vacuum inlet pipe 2, thereby generating suction to adsorb the rubber onto the vacuum adsorption table 1. Then, the moving mechanism 3 is activated to move the laser cutting head 5 on the mounting base 4 to cut the rubber. Rubber of any size and specification can be cut according to actual needs, improving the versatility of the device. At the same time as cutting, high-pressure airflow is introduced into the annular air duct 6 through the air inlet pipe 7 and sprayed out through the inclined blowing nozzles 8 to blow away the molten material generated during the cutting process at the cutting point of the laser cutting head 5. An air cooling barrier is formed in the cutting area to reduce the temperature of the cutting area and prevent the rubber at the cutting point from becoming too hot and causing thermal shrinkage.

[0032] The moving mechanism 3 includes longitudinal guide rails 31 symmetrically installed on both sides of the vacuum adsorption table 1. Longitudinal chains 32 are installed on both longitudinal guide rails 31. Transverse guide rails 33 are installed at the ends of the two longitudinal chains 32. Transverse chains 34 are installed on the transverse guide rails 33. A lifting platform 35 is fixedly connected to the end of the transverse chains 34. A lead screw 36 is rotatably connected to the lifting platform 35. A threaded slide 37 is threadedly connected to the lead screw 36 and connected to the mounting base 4. A motor 38 is installed on the lifting platform 35 to drive the lead screw 36 to rotate. The longitudinal chains 32 move back and forth in the longitudinal guide rails 31, and the transverse chains 34 move left and right in the transverse guide rails 33, thereby driving the laser cutting head 5 to move back and forth and left and right to cut. According to different thicknesses of rubber, the motor 38 is started to drive the lead screw 36 to rotate, which in turn drives the threaded slide 37 on the lead screw 36 to pull the mounting base 4 up and down, thereby driving the laser cutting head 5 to move up and down to adjust the cutting height.

[0033] To improve the stability of the laser cutting head 5 moving up and down, limit guide bars 39 are symmetrically installed on both sides of the front of the lifting platform 35 in the device. A slider 310 is slidably connected to the limit guide bar 39, and the slider 310 is connected to the mounting base 4. As the mounting base 4 moves, the slider 310 moves vertically up and down along the limit guide bar 39, thereby improving the stability of the laser cutting head 5.

[0034] During the laser cutting process, as the rubber sheet is gradually cut away from the whole piece from back to front, the contact area between the remaining waste material and the adsorption holes on the vacuum adsorption table 1 decreases, which may cause slight displacement of the rubber sheet. Therefore, in order to avoid the rubber sheet displacement affecting the cutting, the device is also equipped with an adaptive edge pressing mechanism 9. The adaptive edge pressing mechanism 9 includes a sliding sleeve 91 installed at the bottom of the lifting table 35. A compression spring 92 is fixedly connected to the top wall of the sliding sleeve 91. A sliding rod 93 is fixedly connected to the bottom of the compression spring 92 and slidably connected to the inner wall of the sliding sleeve 91. A U-shaped frame 94 is installed at the bottom of the sliding rod 93. An edge pressing roller 95 is rotatably connected inside the U-shaped frame 94.

[0035] The pressure roller 95 has an arc-shaped structure on both sides and a hollow structure inside. The roller shafts at both ends have through holes that pass through into the pressure roller 95, and bearings are installed in the through holes. As the lifting platform 35 moves, the pressure roller 95 at its bottom moves synchronously with the laser cutting head 5, thereby pressing the edge of the laser cutting head 5, thus avoiding the rubber displacement from affecting the cutting accuracy. When facing rubber of different thicknesses, the compression spring 92 is compressed by the thrust transmitted from the pressure roller 95, thus enabling adaptive pressing of rubber of different thicknesses and improving the versatility of the mechanism.

[0036] Example 2

[0037] Because the area that has just been laser-cut will retain some residual heat, to prevent the rubber edge from lifting due to excessively high temperature at the cut edge, therefore, based on Example 1, as follows... Figures 1-5 As shown, the device is also equipped with a circulating cooling mechanism 10. A T-shaped guide rail 101 is installed at the bottom of the transverse guide rail 33. A slide table 102 is slidably connected to the T-shaped guide rail 101. A liquid storage tank 103 is installed at the bottom of the slide table 102. The liquid storage tank 103 is connected to the lifting platform 35 through a connecting block. Coolant is filled in the liquid storage tank 103. A water pump 104 is installed on the liquid storage tank 103. A liquid delivery pipe 105 is installed at the outlet of the water pump 104. The end of the liquid delivery pipe 105 extends into the through hole and is rotatably connected to the bearing. A return pipe 106 is rotatably connected to the bearing in the through hole of the roller shaft on the other side of the pressure roller 95. The end of the return pipe 106 extends into the liquid storage tank 103.

[0038] During laser cutting, as the pressure roller 95 moves along the laser cutting path, the water pump 104 is started to pump the coolant in the storage tank 103 into the pressure roller 95 through the delivery pipe 105 to quickly cool and shape the cut area, preventing the cut edge from lifting and affecting the precision of the finished product. The coolant after heat exchange flows back through the return pipe 106 to achieve coolant circulation, cooling and shaping.

[0039] It should be noted that, in this document, the terms “comprising,” “including,” or any other variations thereof are intended to cover non-exclusive inclusion, such that a process, method, article, or apparatus that comprises a list of elements includes not only those elements but also other elements not expressly listed, or elements inherent to such process, method, article, or apparatus.

[0040] Although embodiments of the present invention have been shown and described, it will be understood by those skilled in the art that various changes, modifications, substitutions and alterations can be made to these embodiments without departing from the principles and spirit of the present invention, the scope of which is defined by the appended claims and their equivalents.

Claims

1. A cutting device for producing rubber for airbag head combs, comprising a vacuum inlet pipe (2) installed on a vacuum adsorption stage (1), characterized in that: The vacuum adsorption stage (1) is provided with a moving mechanism (3), a mounting base (4) is installed on the moving mechanism (3), a laser cutting head (5) is installed on the mounting base (4), an annular air duct (6) located outside the laser cutting head (5) is installed at the bottom of the mounting base (4) via a connecting rod, an air inlet pipe (7) is fixedly connected to the annular air duct (6), and a blowing nozzle (8) is installed in an annular array at the bottom of the annular air duct (6). The moving mechanism (3) is provided with an adaptive edge pressing mechanism (9) for local edge pressing and anti-displacement of the rubber cutting part, and a circulating cooling mechanism (10) for cooling and shaping the laser cut part.

2. The cutting device for producing rubber for airbag head combs according to claim 1, characterized in that: The blowing nozzles (8) are all oriented toward the cutting point of the laser cutting head (5) and form an angle of 60°-80° with the surface of the rubber material on the vacuum adsorption stage (1).

3. The cutting device for producing rubber for airbag head combs according to claim 1, characterized in that: The moving mechanism (3) includes longitudinal guide rails (31) symmetrically installed on both sides of the vacuum adsorption stage (1). Longitudinal chains (32) are installed on both longitudinal guide rails (31). Transverse guide rails (33) are installed at the ends of the two longitudinal chains (32). Transverse chains (34) are installed on the transverse guide rails (33). A lifting platform (35) is fixedly connected to the end of the transverse chains (34). A lead screw (36) is rotatably connected to the lifting platform (35). A threaded slide (37) is threadedly connected to the lead screw (36). The threaded slide (37) is connected to the mounting base (4). A motor (38) that drives the lead screw (36) to rotate is installed on the lifting platform (35).

4. The cutting device for producing rubber for airbag head combs according to claim 3, characterized in that: The lifting platform (35) has symmetrically installed limit guide strips (39) on both sides of the front. A slider (310) is slidably connected on the limit guide strip (39), and the slider (310) is connected to the mounting base (4).

5. The cutting device for producing rubber for airbag head combs according to claim 3, characterized in that: The adaptive pressing mechanism (9) includes a sliding sleeve (91) installed at the bottom of the lifting platform (35), a compression spring (92) fixedly connected to the top wall of the sliding sleeve (91), a sliding rod (93) slidably connected to the bottom of the compression spring (92) and the bottom of the sliding rod (93) is equipped with a U-shaped frame (94), and a pressing roller (95) is rotatably connected inside the U-shaped frame (94).

6. The cutting device for producing rubber for airbag head combs according to claim 5, characterized in that: Both sides of the pressing roller (95) are arc-shaped structures, and the inside of the pressing roller (95) is hollow. The roller shafts at both ends are provided with through holes that pass through into the pressing roller (95), and bearings are installed in the through holes.

7. The cutting device for producing rubber for airbag head combs according to claim 6, characterized in that: The bottom of the transverse guide rail (33) is equipped with a T-shaped guide rail (101), and a slide table (102) is slidably connected on the T-shaped guide rail (101). A liquid storage tank (103) is installed at the bottom of the slide table (102), and the liquid storage tank (103) is connected to the lifting platform (35) through a connecting block. Coolant is filled in the liquid storage tank (103), and a water pump (104) is installed on the liquid storage tank (103). A delivery pipe (105) is installed at the outlet of the water pump (104), and the end of the delivery pipe (105) extends into the through hole and is rotatably connected to the bearing. A return pipe (106) is rotatably connected in the through hole bearing of the roller shaft on the other side of the pressure roller (95), and the end of the return pipe (106) extends into the liquid storage tank (103).

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