Fixed-length shearing machine for extrusion molding of strip-shaped plastic profile

Abstract

The utility model discloses a fixed-length shearing machine for extrusion molding of a strip-shaped plastic profile. The fixed-length shearing machine comprises a base, a lifting mechanism, a shearing piece and a limiting piece, the lifting mechanism is arranged on the top of the base; the shearing part comprises mounting blocks and a shearing knife, one mounting block is connected with the lifting mechanism, and the other mounting block is arranged on the base; the limiting piece comprises a connecting block, a connecting plate, a supporting block, a limiting plate and a lead screw, the connecting block is arranged on one side of the mounting block on the lifting mechanism, and the connecting plate is arranged at the bottom of the connecting block; the supporting block is arranged at the bottom of the connecting plate, a first screw hole matched with the lead screw penetrates through the middle of the supporting block, the lead screw penetrates through the first screw hole, and the limiting plate is rotationally connected with the tail end of the lead screw. According to the fixed-length shearing machine for extrusion molding of the strip-shaped plastic profile, the part, passing through the shearing knives, of the plastic profile is conveniently limited before shearing, the limiting position is convenient to adjust, the shearing length is rapidly determined, and the efficiency is improved.

Description

TECHNICAL FIELD

[0001] The utility model relates to the field of plastic forming, in particular to a fixed-length shearing machine for strip-shaped plastic profile extrusion forming. BACKGROUND

[0002] After the plastic extruder extrudes the strip-shaped plastic profile, the plastic profile needs to be cut to a specified length according to requirements, and the existing shearing machine is inconvenient to adjust and accurately determine the length of shearing, affecting the processing efficiency. UTILITY MODEL CONTENTS

[0003] In view of the above problems, the utility model provides a fixed-length shearing machine for strip-shaped plastic profile extrusion forming, which is convenient for limiting the part of the plastic profile between the shearing knives before shearing, the limiting position is convenient to adjust, the length of shearing is quickly determined, and the efficiency is improved.

[0004] The technical scheme of the utility model is as follows:

[0005] A fixed-length shearing machine for strip-shaped plastic profile extrusion forming, comprising:

[0006] A lifting mechanism is arranged on the top of the base;

[0007] The shearing part comprises two mounting blocks and shearing knives arranged on the mounting blocks, one of the mounting blocks is connected with the lifting mechanism, and the other mounting block is arranged on the base and opposite to the mounting block on the lifting mechanism;

[0008] The limiting part comprises a connecting block, a connecting plate, a supporting block, a limiting plate and a lead screw, the connecting block is arranged on one side of the mounting block on the lifting mechanism, and the connecting plate is arranged on the bottom of the connecting block; the supporting block is arranged on the side of the connecting plate bottom away from the shearing knife, a first screw hole matched with the lead screw is arranged through the middle part of the supporting block, the lead screw is arranged through the first screw hole, and the limiting plate is slidably arranged on the side of the connecting plate bottom close to the shearing knife and rotationally connected with the tail end of the lead screw.

[0009] In a further technical scheme, the lifting mechanism comprises a lifting frame and an electric telescopic rod arranged on the lifting frame, and the mounting block connected with the lifting mechanism is arranged at the tail end of the electric telescopic rod.

[0010] In a further technical scheme, it further comprises an extrusion part arranged between the limiting plate and the shearing knife, the extrusion part comprises an extrusion rod, a spring, a pressing plate and a pad, the connecting plate is provided with a perforation, the extrusion rod is movably arranged at the perforation perpendicular to the connecting plate, the pressing plate is arranged at the bottom end of the extrusion rod, and the spring is sleeved outside the extrusion rod between the connecting plate and the pressing plate; the pad is arranged on the base at the bottom of the pressing plate.

[0011] In a further technical solution, the first conveying belt is arranged on the side of the shearing member away from the cushion block, and the top side is flush with the top side of the shearing knife on the base; the second conveying belt is arranged on the side of the cushion block away from the shearing member, and the top side is lower than the top side of the cushion block.

[0012] In a further technical solution, the side of the cushion block close to the second conveying belt is provided with a slope.

[0013] In a further technical solution, the mounting block is provided with a mounting groove, a second screw hole is arranged on the side wall of the mounting block corresponding to the mounting groove, the shearing knife is arranged in the mounting groove, a connecting hole is arranged on the shearing knife corresponding to the screw hole, and a bolt is arranged at the second screw hole to connect the shearing knife and the mounting block through the connecting hole.

[0014] The beneficial effects of the utility model are as follows:

[0015] 1. The lifting mechanism can drive one of the shearing knives to approach the other shearing knife mounted on the base to realize the shearing of the strip-shaped plastic profile. Before shearing, the position of the lower limiting plate of the connecting plate can be adjusted by rotating the lead screw, so that the distance between the limiting plate and the shearing position of the shearing knife can be changed. During shearing, the plastic profile passes between the shearing knives, and the end part finally abuts against the limiting plate, so that the plastic profile can be sheared. The distance between the limiting plate and the shearing position of the shearing knife is the length to be sheared. Whether the plastic profile is manually moved or mechanically conveyed, the length to be sheared can be quickly determined by adjusting the position of the limiting plate. The adjustment is convenient, and the processing efficiency is high.

[0016] 2. During the shearing process of the shearing knife, the pressing plate and the cushion block can approach to temporarily fix the plastic profile, so that the sliding displacement is avoided, and the shearing is facilitated and stable.

[0017] 3. The first conveying belt and the second conveying belt are arranged to facilitate the input and output of the plastic profile.

[0018] 4. The slope on the cushion block is beneficial to the output of the sheared plastic profile to the second conveying belt.

[0019] 5. The shearing knife can be quickly disassembled and replaced from the fixing block. DRAWINGS

[0020] Figure 1 is a sectional view of the fixed-length shearing machine for strip-shaped plastic profile extrusion molding according to the utility model embodiment;

[0021] Figure 2 is Figure 1 an enlarged view of A in figure 1;

[0022] Figure 3 is a structural view of the shearing member according to the utility model embodiment.

[0023] MARKS:

[0024] 10. Base; 21. Lifting frame; 22. Electric telescopic rod; 30. Shearing component; 31. Mounting block; 311. Second screw hole; 32. Shearing blade; 41. Connecting block; 42. Connecting plate; 43. Support block; 44. Limiting plate; 45. Lead screw; 51. Extrusion rod; 52. Spring; 53. Pressure plate; 54. Pad block; 55. Inclined ramp; 61. First conveyor belt; 62. Second conveyor belt. Detailed Implementation

[0025] The embodiments of this utility model will be further described below with reference to the accompanying drawings.

[0026] Example:

[0027] like Figures 1-3 As shown, a fixed-length shearing machine for extruding strip-shaped plastic profiles includes a base 10, a lifting mechanism, a shearing component 30, and a limiting component. The lifting mechanism is located on the top of the base 10 and includes a door-frame-shaped lifting frame 21 and an electric telescopic rod 22 mounted on the lifting frame 21. The shearing component 30 includes two mounting blocks 31 and shearing blades 32 mounted on the mounting blocks 31. One mounting block 31 is connected to the bottom end of the electric telescopic rod 22, and the other mounting block 31 is located on the base 10, opposite to the mounting block 31 on the lifting mechanism. The limiting component includes a connecting block 41, a connecting plate 42, a support block 43, a limiting plate 44, and a wire. The rod 45 and the connecting block 41 are located on one side of the mounting block 31 on the lifting mechanism, and the connecting plate 42 is located at the bottom of the connecting block 41. The support block 43 is located on the bottom of the connecting plate 42 away from the shearing blade 32. The middle of the support block 43 is provided with a first screw hole for matching the lead screw 45. The lead screw 45 passes through the first screw hole. The limiting plate 44 is slidably located on the bottom of the connecting plate 42 near the shearing blade 32 and is rotatably connected to the end of the lead screw 45. Before and after the two shearing blades 32 cut, the bottom side of the limiting plate 44 is always lower than the top side of the shearing blade 32 on the base 10, ensuring that the plastic profile can abut against the limiting plate 44.

[0028] The working principle of the above technical solution is as follows:

[0029] Before shearing, rotate the screw 45 relative to the support block 43 to adjust the position of the lower limit plate 44 of the connecting plate 42. Change the distance between the limit plate 44 and the shearing blade 32 at the shearing point according to the length requirement of the plastic profile. During shearing, the plastic profile passes between the shearing blades 32 and the end finally abuts against the limit plate 44, which can then be sheared. The electric telescopic rod 22 lowers the shearing blade 32 it is connected to, and moves relative to another shearing blade 32 to move closer and cross over, completing one shearing. The distance between the limit plate 44 and the shearing blade 32 at the shearing point is the length to be sheared.

[0030] In another embodiment, such as Figure 3As shown, the shearing machine further comprises a pressing member arranged between the limiting plate 44 and the shearing knife 32. The pressing member comprises a pressing rod 51, a spring 52, a pressing plate 53 and a cushion block 54. The connecting plate 42 is provided with a through hole, and the pressing rod 51 is movably arranged in the through hole and perpendicular to the connecting plate 42. The pressing plate 53 is arranged at the bottom end of the pressing rod 51, and the spring 52 is sleeved outside the pressing rod 51 between the connecting plate 42 and the pressing plate 53. The cushion block 54 is arranged on the base 10 at the bottom of the pressing plate 53. In the natural elongation state of the spring 52, the pressing plate 53 is lower than the bottom side of the shearing knife 32 on the electric telescopic rod 22. The top end of the pressing rod 51 is provided with a limiting block to prevent the pressing rod 51 from disengaging from the through hole.

[0031] During shearing, the connecting plate 42 can drive the pressing plate 53 to descend together, and the pressing plate 53 and the cushion block 54 can press and fix the plastic profile in advance. After being fixed, the shearing knife 32 can continue to descend, the spring 52 of the connecting plate 42 and the pressing plate 53 is compressed, and the plastic profile is further pressed to avoid sliding displacement, thereby facilitating stable shearing. After shearing is completed, the spring 52 rebounds, and the pressing plate 53 resets, thereby facilitating next time pressing.

[0032] In another embodiment, as shown in the accompanying drawings, Figure 1 the shearing machine further comprises a first conveying belt 61 and a second conveying belt 62. The first conveying belt 61 is arranged on the side of the shearing member 30 away from the cushion block 54, and the top side is flush with the top side of the shearing knife 32 on the base 10. The second conveying belt 62 is arranged on the side of the cushion block 54 away from the shearing member 30, and the top side is lower than the top side of the cushion block 54. The side of the cushion block 54 close to the second conveying belt 62 is provided with a slope 55, and the bottom side of the slope 55 is higher than the second conveying belt 62.

[0033] The first conveying belt 61 is responsible for conveying the extruded plastic profile between the shearing knives 32 and abutting against the limiting plate 44, and the plastic profile stops advancing after abutting. The sheared plastic profile can slide down the slope 55 to the second conveying belt 62 for output.

[0034] In another embodiment, as shown in the accompanying drawings, Figure 3 the mounting block 31 is provided with a mounting groove, and three second screw holes 311 are equidistantly arranged on the side wall of the mounting block 31 along the length direction. The shearing knife 32 is arranged in the mounting groove of the mounting block 31, and the shearing knife 32 is provided with a connecting hole corresponding to the screw hole. The second screw hole 311 is provided with a bolt penetrating through the connecting hole to connect the shearing knife 32 and the mounting block 31.

[0035] The shearing knife 32 is connected in the mounting groove of the mounting block 31 through the bolt, thereby facilitating quick disassembly and replacement.

[0036] The above-described embodiments only express the specific implementation manners of the present application, and the description is relatively specific and detailed, but it should not be understood as a limitation on the patent scope of the present application. It should be noted that for ordinary skilled persons in the art, without departing from the concept of the present application, a number of modifications and improvements can be made, which are all within the protection scope of the present application.

Claims

1. A fixed-length shearing machine for extruding strip-shaped plastic profiles, characterized in that, The utility model relates to a cutting device for cutting sheet metal, comprising: a lifting mechanism arranged on the top of the base; a shearing piece comprising two mounting blocks and a shearing cutter arranged on the mounting blocks, one of the mounting blocks being connected to the lifting mechanism, and the other mounting block being arranged on the base opposite to the mounting block on the lifting mechanism; a limiting piece comprising a connecting block, a connecting plate, a supporting block, a limiting plate and a lead screw, the connecting block being arranged on one side of the mounting block on the lifting mechanism, the connecting plate being arranged on the bottom of the connecting block, the supporting block being arranged on the bottom of the connecting plate away from the shearing cutter, a first screw hole matching the lead screw being arranged in the middle of the supporting block, the lead screw being arranged through the first screw hole, and the limiting plate being arranged on the bottom of the connecting plate close to the shearing cutter and being rotatably connected to the end of the lead screw.

2. The fixed-length cutting machine for extrusion molding of a strip-shaped plastic profile according to claim 1, characterized in that, The lifting mechanism comprises a lifting frame and an electric telescopic rod arranged on the lifting frame, and the mounting block connected to the lifting mechanism is arranged at the end of the electric telescopic rod.

3. The fixed-length cutting machine for extrusion molding of a strip-shaped plastic profile according to claim 1, characterized in that, The utility model further comprises a pressing piece arranged between the limiting plate and the shearing cutter, the pressing piece comprising a pressing rod, a spring, a pressing plate and a pad, the connecting plate being provided with a through hole, the pressing rod being movably arranged in the through hole perpendicular to the connecting plate, the pressing plate being arranged at the bottom end of the pressing rod, and the spring being arranged outside the pressing rod between the connecting plate and the pressing plate; and the pad being arranged on the base at the bottom of the pressing plate.

4. The fixed-length cutting machine for extrusion molding of a strip-shaped plastic profile according to claim 3, characterized in that, The utility model further comprises a first conveying belt and a second conveying belt, the first conveying belt being arranged on the side of the shearing piece away from the pad, the top side of the first conveying belt being flush with the top side of the shearing cutter on the base, and the second conveying belt being arranged on the side of the pad away from the shearing piece, the top side of the second conveying belt being lower than the top side of the pad.

5. The fixed-length cutting machine for extrusion molding of a strip-shaped plastic profile according to claim 4, characterized in that, The side of the pad close to the second conveying belt is provided with a slope.

6. The fixed-length cutting machine for extrusion molding of a strip-shaped plastic profile according to claim 1, characterized in that, The mounting block is provided with a mounting groove, the sidewall of the mounting block corresponding to the mounting groove is provided with a second screw hole, the shearing cutter is arranged in the mounting groove, the shearing cutter is provided with a connecting hole corresponding to the screw hole, and the second screw hole is provided with a bolt connecting the shearing cutter and the mounting block through the connecting hole.

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