Automatic foam cutting machine

Abstract

The invention relates to the technical field of foam production, in particular to an automatic foam cutting machine which comprises a rack and a workbench fixed to the rack, a plurality of air holes are formed in the workbench, an air exhaust box is arranged below the workbench, the top of the air exhaust box is open and communicated with the air holes, and the air exhaust box is connected with an air exhaust pump; the machine frame is slidably connected with a machine base, a middle shaft driven by a driving motor to rotate is arranged on the machine base, a plurality of annular cutters are arranged on the middle shaft in the length direction of the middle shaft, and a driving mechanism is arranged on the machine base. Foam displacement is avoided in a vacuum adsorption mode, machining is carried out in the mode that a cutter moves and a workpiece does not move, and the surface of the foam is not prone to being damaged or the foam is not prone to being deformed; in the cutting process, the air exhaust box moves along with the machine base, the foam adsorption effect is improved, the foam is reliably adsorbed by the air holes in the cutting position, the foam is not prone to displacement in the cutting position, and the accuracy of the cutting position is high. The distance between every two adjacent ring cutters can be conveniently adjusted, and the distance between every two adjacent ring cutters is kept consistent all the time.

Description

Technical Field

[0001] The present application relates to the technical field of foam production, and in particular to an automatic foam cutting machine. Background Art

[0002] Foam is a material made of foamed plastic particles. It is called foam for short. Foam has the characteristics of elasticity and light weight. Foam can be divided into EVA foam, PU foam, PVC foam, PE foam, etc. according to the material. Foam products are widely used in various aspects of production and life. After the foam is produced, it is a large area of ​​material, which needs to be cut by a cutting machine.

[0003] The utility model patent with the existing announcement number CN210678857U discloses a foam cutting machine with adjustable blade spacing, including a workbench, a hob device and a machine body. The hob device is located above the workbench, and a hob fixed mounting seat is relatively arranged on the machine body along its width direction. The hob device includes a hob shaft and a plurality of hobs slidably connected to the hob shaft. The tablet mounting seat is rotatably connected with a tablet mounting shaft, and a tablet is slidably connected with the tablet mounting shaft. The connection between the tablet and the tablet mounting shaft is made of elastic material. A rotating rod is provided on the side of the tablet mounting shaft away from the hob. The rotating rod can be turned to drive the tablet shaft to rotate. A locking screw is threadedly connected at the intersection of the tablet mounting shaft and the tablet mounting seat. The tablet reaches the correct position and is fixed by the locking screw. When the foam is transmitted from under the hob, the tablet presses the foam so that it will not curl up or roll up.

[0004] Regarding the above-mentioned related technologies, the inventor believes that the material of foam is relatively soft, and using a pressing sheet to compress the foam may easily damage the foam surface or cause irreversible deformation, and there must be a gap between the position of the pressing sheet and the cutting position of the roller. The lighter foam still has the possibility of displacement, resulting in deviation in the cutting position. Summary of the invention

[0005] The present application provides an automatic foam cutting machine, which adopts vacuum adsorption to avoid foam displacement, and performs processing in a manner where the tool moves and the workpiece does not move, so it is not easy to damage the foam surface or cause the foam to deform, and the cutting position is highly accurate and position deviation is not easy to occur.

[0006] The present application provides an automatic foam cutting machine, which adopts the following technical solution: A foam automatic cutting machine comprises a frame and a workbench fixed to the frame, wherein the workbench is provided with a plurality of air holes, an exhaust box is provided under the workbench, the top of the exhaust box is open and connected to the air holes, and the exhaust box is connected to an exhaust pump; the frame is slidably connected to a base, the base is provided with a driving motor and a central axis driven to rotate by the driving motor, a plurality of circular cutting knives are provided on the central axis along its length direction, the base is provided with a driving mechanism, and the motor drives the base to slide through the driving mechanism.

[0007] By adopting the above technical solution, the personnel put the foam raw material to be cut on the workbench, and then start the vacuum pump and the drive motor. The vacuum pump generates suction in the vacuum box, and the suction acts on the bottom of the foam through the air holes to adsorb and fix the foam on the workbench. The drive motor drives the central axis to rotate, and the central axis drives the circular cutter to rotate. At the same time, the drive motor drives the machine base to slide through the drive mechanism to cut the foam. After the cutting is completed, the drive motor and the vacuum pump are stopped to remove the foam.

[0008] This cutting machine uses vacuum adsorption to avoid foam displacement, and uses a method of moving the tool and keeping the workpiece stationary for processing. It is not easy to damage the foam surface or cause the foam to deform. The foam can be adsorbed by the pores at the cutting position and is not easy to move. The cutting position is highly accurate and is not easy to produce position deviations.

[0009] Optionally, the driving mechanism includes a rack fixed to the frame and a gear coaxially fixed to the central axis, the gear is meshed with the rack, and the output end of the driving motor is connected to the gear transmission.

[0010] By adopting the above technical solution, when the driving motor drives the central shaft to rotate, the gear rotates together with the central shaft. Since the gear is engaged with the rack, the gear rolls along the rack while rotating, thereby driving the entire machine base to slide.

[0011] Optionally, the outer diameter of the gear is smaller than the outer diameter of the circular cutter.

[0012] By adopting the above technical solution, the rotation speed of the gear and the circular cutter is the same, but the outer diameter of the circular cutter is larger and the rotation linear speed of its peripheral blade is greater. When the gear rolls along the rack, the circular cutter can cut the foam instead of just rolling over the foam surface, ensuring that the foam raw material can be reliably cut off.

[0013] Optionally, a reducer is fixed on the machine base, an input end of the reducer is fixed to an output end of the driving motor, and an output end of the reducer is fixed to the central shaft.

[0014] By adopting the above technical solution, the speed directly output by the driving motor is too high, and after being decelerated by the reducer, it drives the central shaft to rotate, and then drives the gears to rotate.

[0015] Optionally, the vacuum box is fixed to the machine base, and the top surface of the vacuum box is in sliding contact with the bottom surface of the workbench.

[0016] By adopting the above technical solution, during cutting, the movement of the machine base drives the vacuum box to move together, so the size of the vacuum box can be made smaller, which can reduce air leakage and improve the adsorption effect on the foam. The foam is reliably adsorbed by the pores at the cutting position, thereby improving the fixing effect of the foam cutting position.

[0017] Optionally, the annular cutter is fixed with an inner ring block, and the inner ring block is slidably sleeved with the central shaft via a keyway structure, and an adjustment mechanism for sliding the inner ring block is provided on the machine base.

[0018] By adopting the above technical solution, the inner ring block is slid to adjust the distance between adjacent ring cutters to cut out foam strips of required width.

[0019] Optionally, the adjustment mechanism includes a sliding rod slidably connected to the machine base, a sliding frame is fixed to the lower end of the sliding rod, the sliding frame is slidably connected to a plurality of wheel frames, the sliding direction of the wheel frames is parallel to the axis of the central shaft, the wheel frames are rotatably connected to a plurality of abutting wheels, both sides of the inner ring block are conical guide surfaces, and the abutting wheels abut the guide surfaces through the edges of the wheel surfaces.

[0020] By adopting the above technical solution, the distance between the bearing wheel and the central axis is changed when the slide is raised or lowered, and the adjacent bearing wheels and inner ring blocks are abutted against each other through the guide surface. Therefore, the adjacent inner ring blocks will adaptively approach or move away, and the spacing between adjacent inner ring blocks will always remain consistent. The spacing between adjacent ring cutting knives will also remain consistent, thereby ensuring that the width of the cut foam is the same.

[0021] Optionally, the machine base is rotatably connected to a screw rod, the screw rod passes through a slide and is threadedly connected to the slide, and a handle is fixed to the top end of the screw rod.

[0022] By adopting the above technical solution, a person rotates the screw rod through the handle, and the screw rod drives the slide to rise and fall through the threaded connection; the self-locking effect of the threaded connection keeps the slide at this height position.

[0023] Optionally, a spring is provided on one end of the central shaft, one end of the spring abuts against the machine base, and the other end of the spring abuts against the inner ring block at the end.

[0024] By adopting the above technical solution, the adjacent abutment wheels and inner ring blocks are in contact with each other through the elastic force of the spring, ensuring that the spacing between adjacent inner ring blocks is consistent.

[0025] Optionally, baffle plate 1 is fixed on one side of the workbench, and baffle plate 2 is placed on the other side of the workbench, and baffle plate 2 is an L-shaped plate.

[0026] By adopting the above technical solution, one side of the foam material is pressed against the side wall of the baffle plate 1 during cutting, and the position of the baffle plate 2 can be moved at will. The personnel put it on the other side of the foam material and abut against the foam material, thereby positioning the foam material. At the same time, the L-shaped baffle plate 2 can block the air holes at the position to reduce air leakage.

[0027] In summary, the present application includes at least one of the following beneficial technical effects: 1. Use vacuum adsorption to avoid foam displacement, and use the method of moving the tool and not moving the workpiece for processing, which is not easy to damage the foam surface or cause the foam to deform; 2. When cutting, the vacuum box moves together with the base, which can reduce air leakage and improve the adsorption effect on the foam. The foam is reliably adsorbed by the pores at the cutting position, and the foam is not easy to move at the cutting position. The cutting position is highly accurate and is not prone to position deviation; 3. The distance between adjacent circular cutting knives can be easily adjusted, and the distance between adjacent circular cutting knives remains consistent before and after adjustment, ensuring that the width of the cut foam is the same. BRIEF DESCRIPTION OF THE DRAWINGS

[0028] Figure 1 is a three-dimensional diagram of an automatic foam cutting machine of an embodiment; Figure 2 is a cross-sectional view of the embodiment.

[0029] Explanation of the accompanying reference numerals: 1. frame; 2. workbench; 21. air hole; 3. vacuum box; 4. machine base; 41. drive motor; 42. central axis; 43. circular cutter; 11. guide rail; 12. guide rod; 13. rack; 44. gear; 45. reducer; 22. baffle 1; 23. baffle 2; 46. inner ring block; 51. slide rod; 5. slide frame; 52. wheel frame; 53. wheel stop; 47. guide surface; 48. spring; 54. screw rod; 55. handle; 6. vacuum pump. DETAILED DESCRIPTION

[0030] The present application is further described in detail below in conjunction with the accompanying drawings.

[0031] Reference Figure 1 and Figure 2The present embodiment discloses an automatic foam cutting machine, comprising a frame 1, a workbench 2 fixed to the frame 1, the top surface of the workbench 2 is a horizontal plane, the workbench 2 is a table surface for placing foam, a plurality of air holes 21 are provided on the workbench 2, and the air holes 21 are arranged in an array along the length and width direction of the workbench 2, and an air extraction box 3 is provided below the workbench 2. The frame 1 is slidably connected to a base 4, the base 4 is provided with a driving motor 41, and a central shaft 42 driven to rotate by the driving motor 41, the two ends of the central shaft 42 are rotatably connected to the base 4, a plurality of ring cutting knives 43 are provided on the central shaft 42 along its length direction, and a driving mechanism is provided on the base 4, and the driving motor 41 drives the base 4 to slide through the driving mechanism.

[0032] The frame 1 is fixed with a guide rail 11 and a guide rod 12, and the guide rod 12 is arranged parallel to the guide rail 11. The base 4 is slidably connected with the guide rail 11 and the guide rod 12 at the same time, so as to improve the sliding stability of the base 4. The driving mechanism includes a rack 13 fixed to the frame 1 and a gear 44 coaxially fixed to the central axis 42. The length direction of the rack 13 is parallel to the guide rod 12, and the gear 44 is meshed with the rack 13. The output end of the driving motor 41 is transmission-connected with the gear 44. Specifically, a reducer 45 is fixed to the base 4, and the input end of the reducer 45 is fixed to the output end of the driving motor 41, and the output end of the reducer 45 is fixed to the central axis 42. The torque output by the driving motor 41 is reduced by the reducer 45 to drive the gear 44 to rotate. Since the gear 44 is meshed with the rack 13, the gear 44 rolls along the rack 13 while rotating, thereby driving the entire base 4 to slide.

[0033] The outer diameter of the gear 44 is smaller than the outer diameter of the circular cutter 43. With this arrangement, although the gear 44 and the circular cutter 43 have the same rotational speed, the outer diameter of the circular cutter 43 is larger and the rotational linear speed of its peripheral blade is greater. When the gear 44 rolls along the rack 13, the circular cutter 43 can cut the foam instead of just rolling over the foam surface, thereby ensuring that the foam raw material can be reliably cut off.

[0034] A baffle plate 22 is fixed on one side of the workbench 2, and a baffle plate 23 is placed on the other side of the workbench 2. The baffle plate 23 is an L-shaped plate. The baffle plate 22 is used as a reference for positioning one side of the foam raw material. When cutting, one side of the foam raw material is pressed against the side wall of the baffle plate 22. The position of the baffle plate 23 can be moved at will. The personnel put it on the other side of the foam raw material and press it against the foam raw material, so as to position the foam raw material. At the same time, the L-shaped baffle plate 23 can cover the air hole 21 at the position to reduce air leakage.

[0035] The circular cutting knife 43 is fixed with an inner ring block 46, and the inner ring block 46 is slidably connected with the central axis 42 through a keyway structure. The machine base 4 is provided with an adjustment mechanism for sliding the inner ring block 46. The adjustment mechanism includes a slide bar 51 slidably connected with the machine base 4, and the sliding direction of the slide bar 51 is along the vertical direction. The lower end of the slide bar 51 is fixed with a slide 5, and the slide 5 is located directly above the central axis 42. The slide bar 51 provides a guiding effect for the vertical sliding of the slide 5. The bottom of the slide 5 is slidably connected with a plurality of wheel frames 52. Specifically, the wheel frame 52 is slidably connected with the dovetail groove at the bottom of the slide 5 through the dovetail block at the top. The sliding direction of the wheel frame 52 is parallel to the axis of the central axis 42. The wheel frame 52 is rotatably connected with a plurality of wheels 53, and the plurality of wheels 53 are staggered with the plurality of circular cutting knives 43.

[0036] Reference Figure 2 The inner ring block 46 has conical guide surfaces 47 on both sides, and the wheel 53 contacts the guide surface 47 through the edge of the wheel surface. The position of the wheel 53 for contacting the guide surface 47 is also a conical surface. A spring 48 is provided on one end of the central shaft 42. One end of the spring 48 contacts the machine base 4, and the other end of the spring 48 contacts the inner ring block 46 at the end. The function of the spring 48 is to drive all the wheels 53 and the inner ring block 46 to press against each other to avoid gaps. The inner ring block 46 at the end away from the spring 48 presses against the end surface of the gear 44.

[0037] Reference Figure 1 and Figure 2 The base 4 is rotatably connected with a screw rod 54, which passes through the slide 5 and is threadedly connected with the slide 5, and a handle 55 is fixed on the top of the screw rod 54. The staff rotates the screw rod 54 through the handle 55, and the screw rod 54 drives the slide 5 to rise and fall through the threaded connection, thereby adjusting the distance between the wheel 53 and the central axis 42. Due to the elastic force of the spring 48, the adjacent wheels 53 and the inner ring blocks 46 are in contact, so the adjacent inner ring blocks 46 are adaptively approached or separated, and the adjacent wheels 53 are also adaptively approached or separated, and the spacing between the adjacent inner ring blocks 46 is always consistent, so the spacing between the adjacent ring cutters 43 is also consistent, thereby ensuring that the width of the cut foam is the same.

[0038] The vacuum box 3 is fixed to the base 4, and the top surface of the vacuum box 3 is in sliding contact with the bottom surface of the workbench 2. The top of the vacuum box 3 is open and connected to the air hole 21. The vacuum box 3 is connected to the vacuum pump 6, which is fixed outside the vacuum box 3. The suction end of the vacuum pump 6 is connected to the vacuum box 3 through a pipeline. After the vacuum pump 6 is started, the vacuum pump 6 extracts the air in the vacuum box 3, and the air hole 21 located above the vacuum box 3 generates a downward suction force to suck the foam material at the corresponding position; when the base 4 slides, the vacuum box 3 slides with the base 4, so that the area of ​​the air hole 21 that generates suction also changes with the position of the base 4.

[0039] The working principle of the foam automatic cutting machine of the embodiment of the present application is as follows: a person places the foam material to be cut on the workbench 2, so that one side of the foam abuts against the baffle 1 22, and then moves the position of the baffle 2 23 so that it abuts against the other side of the foam, completing the preliminary positioning of the foam. Then the vacuum pump 6 and the drive motor 41 are started, and the vacuum pump 6 generates suction in the vacuum box 3, and the suction acts on the bottom of the foam through the air hole 21, so that the foam is adsorbed and fixed on the workbench 2.

[0040] The driving motor 41 drives the central axis 42 and the gear 44 to rotate. Since the gear 44 is meshed with the rack 13, the gear 44 rolls along the rack 13 while rotating, thereby driving the entire base 4 to slide. At the same time, the central axis 42 drives the circular cutter 43 to rotate to cut the foam. After the cutting is completed, the driving motor 41 and the vacuum pump 6 are stopped to remove the foam. The position of the base 4 does not need to be reset. The new foam to be cut is re-placed, and the driving motor 41 is controlled to rotate in the opposite direction to perform the next round of cutting.

[0041] Through the present cutting machine, the displacement of foam is avoided by vacuum adsorption, and the processing is performed in a manner of moving the tool and stationary workpiece, which is not easy to damage the foam surface or cause the foam to deform. In addition, when cutting, the vacuum box 3 moves together with the random seat 4, which can reduce air leakage and improve the adsorption effect on the foam. The foam is reliably adsorbed by the air hole 21 at the cutting position, and the foam is not easy to be displaced at the cutting position. The cutting position is highly accurate and is not easy to produce position deviation.

[0042] The above are all preferred embodiments of the present application, and the protection scope of the present application is not limited thereto. Therefore, any equivalent changes made according to the structure, shape, and principle of the present application should be included in the protection scope of the present application.

Claims

1. A foam automatic cutting machine, characterized in that: The invention comprises a frame (1), a workbench (2) fixed to the frame (1), a plurality of air holes (21) being provided on the workbench (2), a vacuum box (3) being provided below the workbench (2), the top of the vacuum box (3) being open and connected to the air holes (21), and the vacuum box (3) being connected to a vacuum pump (6); the frame (1) being slidably connected to a base (4), the base (4) being provided with a driving motor (41) and a central axis (42) driven to rotate by the driving motor (41), the central axis (42) being provided with a plurality of ring cutting knives (43) along its length direction, the base (4) being provided with a driving mechanism, and the driving motor (41) driving the base (4) to slide through the driving mechanism.

2. The automatic foam cutting machine according to claim 1, characterized in that: The driving mechanism comprises a rack (13) fixed to the frame (1) and a gear (44) coaxially fixed to the central axis (42); the gear (44) is meshed with the rack (13); and the output end of the driving motor (41) is drivingly connected to the gear (44).

3. The automatic foam cutting machine according to claim 2, characterized in that: The outer diameter of the gear (44) is smaller than the outer diameter of the circular cutter (43).

4. The automatic foam cutting machine according to claim 2, characterized in that: A reducer (45) is fixed on the machine base (4), an input end of the reducer (45) is fixed to an output end of a drive motor (41), and an output end of the reducer (45) is fixed to a central shaft (42).

5. The automatic foam cutting machine according to claim 1, characterized in that: The vacuum box (3) is fixed to the machine base (4), and the top surface of the vacuum box (3) is in sliding contact with the bottom surface of the workbench (2).

6. The automatic foam cutting machine according to claim 1, characterized in that: The ring cutter (43) is fixed with an inner ring block (46), and the inner ring block (46) is slidably sleeved with the central shaft (42) via a keyway structure. The machine base (4) is provided with an adjustment mechanism for sliding the inner ring block (46).

7. The automatic foam cutting machine according to claim 6, characterized in that: The adjustment mechanism comprises a slide rod (51) slidably connected to the machine base (4); a slide frame (5) is fixed to the lower end of the slide rod (51); the slide frame (5) is slidably connected to a plurality of wheel frames (52); the sliding direction of the wheel frames (52) is parallel to the axis of the central shaft (42); the wheel frames (52) are rotatably connected to a plurality of abutting wheels (53); both sides of the inner ring block (46) are conical guide surfaces (47); the abutting wheels (53) abut against the guide surfaces (47) through the edges of the wheel surfaces.

8. The automatic foam cutting machine according to claim 7, characterized in that: The machine base (4) is rotatably connected to a screw rod (54), the screw rod (54) passes through the slide (5) and is threadedly connected to the slide (5), and a handle (55) is fixed to the top end of the screw rod (54).

9. The automatic foam cutting machine according to claim 6, characterized in that: A spring (48) is provided on one end of the central shaft (42), one end of the spring (48) abuts against the machine base (4), and the other end of the spring (48) abuts against the inner ring block (46) at the end.

10. The automatic foam cutting machine according to claim 1, characterized in that: A baffle plate 1 (22) is fixed on one side of the workbench (2), and a baffle plate 2 (23) is placed on the other side of the workbench (2), wherein the baffle plate 2 (23) is an L-shaped plate.

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