Rubber sheet positioning and cutting device

Abstract

The utility model discloses a rubber sheet positioning and cutting device which comprises a longitudinal cutting structure, a first positioning structure, a second positioning structure and a transverse cutting structure, the longitudinal cutting structure comprises a U-shaped first support, the first support is fixedly installed on a machine frame of a conveyor, a rotating shaft is rotatably installed between the inner side walls of the first support, and the second positioning structure is fixedly installed on the first support. A first motor is mounted on the first bracket; an output shaft of the first motor is in transmission connection with the rotating shaft; the first screw is driven by the worm gear and the worm to rotate, so that the two first nuts are controlled to move towards the two sides or the middle, the two first nuts move towards the middle to control the extension of the cross frame, the distance between the first blades on the two adjacent sliding frames is increased, and the two first nuts move towards the two sides to control the shortening of the cross frame. The distance between the first blades on the two adjacent sliding frames is reduced, the problem that in the prior art, the efficiency of manually adjusting the distance is low is solved, and meanwhile the consistency of the cutting width of the rubber sheet is guaranteed.

Description

Technical Field

[0001] The utility model relates to the technical field of rubber sheet production, in particular to a rubber sheet positioning and cutting device. Background Art

[0002] When producing and processing rubber sheets, it is necessary to cut the rubber sheets into different lengths and widths according to actual needs. However, the traditional rubber sheet positioning and cutting device cannot adjust the spacing between the cutting blades. Technical personnel in this field have conducted continuous research and development to address this defect. For example, the utility model patent with publication number CN210910168U designs a rubber sheet cutting device. The device can adjust the position of the circular blade on the cutting drum by setting a first slide groove and cooperating with a slider, and then fix the position of the slider by a fixing bolt, thereby achieving the spacing adjustment of the circular blades. However, the device still has some defects. The circular blades of the device need to be manually adjusted one by one by the worker, which is cumbersome to operate, and it is difficult for the worker to manually adjust the spacing between the circular blades to be the same, which will result in poor consistency in the cutting width of the rubber sheet. Utility Model Content

[0003] The utility model aims to provide a rubber sheet positioning and cutting device to solve the problems raised in the background technology in view of the shortcomings of the prior art.

[0004] To achieve this purpose, the utility model adopts the following technical solutions:

[0005] A rubber sheet positioning and cutting device comprises a longitudinal cutting structure, a first positioning structure, a second positioning structure and a transverse cutting structure, wherein the longitudinal cutting structure comprises a U-shaped first bracket, the first bracket is fixedly mounted on a frame of a conveyor, a rotating shaft is rotatably mounted between inner side walls of the first bracket, a first motor is mounted on the first bracket, and an output shaft of the first motor is drivingly connected to the rotating shaft;

[0006] The first bracket is provided with a slide groove, and a plurality of sliding frames are slidably mounted on the bottom of the first bracket through the slide groove, and a plurality of circular first blades are arranged on the rotating shaft, and the plurality of first blades are rotatably mounted on the plurality of sliding frames respectively;

[0007] A cross frame is arranged on the top of the plurality of sliding frames, the sliding frame and the middle connecting shaft of the cross frame are fixed, a first screw is rotatably mounted on the first bracket, two first nuts are symmetrically arranged on the first screw, the two first nuts are respectively fixed to two opposite connecting shafts on the cross frame, a worm wheel is arranged on the first screw, a worm is rotatably mounted on the first bracket, and the worm is meshed with the worm wheel, a second motor is arranged on the first bracket, and the output shaft of the second motor is drivingly connected to the worm wheel.

[0008] As a preferred solution for the rubber sheet positioning and cutting device, the first positioning structure has two and is respectively arranged in front and behind the longitudinal cutting structure, the first positioning structure includes a U-shaped second bracket, the second bracket is fixedly mounted on the frame of the conveyor, slide grooves are arranged on the inner sides of both sides of the second bracket, and slide bars are vertically mounted in the slide grooves, a mounting frame is slidably mounted between the two slide bars, a pressure roller is rotatably mounted on the mounting frame, a spring is sleeved on the slide bar, and the spring is pressed between the top of the mounting frame and the top of the slide groove on the second bracket.

[0009] As a preferred solution of the rubber sheet positioning and cutting device, there are four second positioning structures and every two second positioning structures form a group, the two second positioning structures in each group are respectively arranged in front and behind the first positioning structure, the second positioning structure includes a U-shaped third bracket, the third bracket is fixedly mounted on the frame of the conveyor, a second screw is rotatably mounted between the inner side walls of the third bracket, two second nuts are symmetrically arranged on the second screw, and the two second nuts are slidably mounted on the bottom of the third bracket, limiting plates are installed on the bottom of the two second nuts, and the two limiting plates are symmetrical about the center line of the third bracket, and a transmission structure is arranged between the two second positioning structures in each group.

[0010] As a preferred solution of the rubber sheet positioning and cutting device, the transmission structure includes two sprockets, a chain and a handwheel. The two sprockets are respectively installed on the second screws on two second positioning structures in the same group. The two sprockets are connected by chain transmission, and the handwheel is fixedly installed on one end of the second screw on one of the second positioning structures.

[0011] As a preferred solution for the rubber sheet positioning and cutting device, the transverse cutting structure includes a U-shaped fourth bracket, which is fixedly mounted on the frame of the conveyor and close to the conveying end of the conveyor. Two electric push rods are installed on the top of the fourth bracket, and a base plate is provided at the bottom of the fourth bracket. The output end of the electric push rod is fixed to the top of the base plate, and a second blade is installed at the bottom of the base plate.

[0012] As a preferred solution of the rubber sheet positioning and cutting device, a limit strip is arranged on the rotating shaft, and a through hole having the same shape and size as the cross-section of the rotating shaft is arranged at the center of the circle of the first blade.

[0013] As a preferred solution of the rubber sheet positioning and cutting device, the left half of the first screw is a left-handed thread, and the right half is a right-handed thread.

[0014] As a preferred solution of the rubber sheet positioning and cutting device, the left half of the second screw is a left-handed thread, and the right half is a right-handed thread.

[0015] Beneficial effects of the utility model:

[0016] The utility model provides a second motor to drive the worm to rotate, and then drives the first screw to rotate through the transmission of the worm wheel and the worm, so as to control the two first nuts on the first screw to move to both sides or the middle at the same time to adjust the length of the cross frame, and then adjust the spacing of the first blades through the cross frame. The two first nuts move toward the middle to control the elongation of the cross frame, so that the spacing of the first blades on the two adjacent sliding frames is increased, and the two first nuts move to both sides to control the shortening of the cross frame, so that the spacing of the first blades on the two adjacent sliding frames is reduced, thereby solving the problem of low efficiency of the existing manual spacing adjustment and ensuring the consistency of the cutting width of the rubber sheet. BRIEF DESCRIPTION OF THE DRAWINGS

[0017] In order to more clearly illustrate the technical solutions of the embodiments of the present utility model, the following briefly introduces the drawings required for use in the embodiments of the present utility model. Obviously, the drawings described below are only some embodiments of the present utility model, and for ordinary technicians in this field, other drawings can also be obtained based on these drawings without creative work.

[0018] Figure 1 It is a schematic diagram of the overall structure of the rubber sheet positioning and cutting device described in the utility model.

[0019] Figure 2 It is a structural schematic diagram of the longitudinal cutting structure described in the utility model.

[0020] Figure 3 It is a schematic diagram of the split structure of the rotating shaft, the sliding frame and the first blade of the utility model.

[0021] Figure 4 yes Figure 2 A magnified view of the local structure of part A.

[0022] Figure 5 It is a structural schematic diagram of the first positioning structure described in the utility model.

[0023] Figure 6 It is a structural schematic diagram of the second positioning structure described in the utility model.

[0024] Figure 7 It is a structural schematic diagram of the transmission structure described in the utility model.

[0025] Figure 8 It is a structural schematic diagram of the transverse cutting structure described in the utility model.

[0026] In the figure:

[0027] 1. Conveyor; 2. Longitudinal cutting structure; 21. First bracket; 22. Rotating shaft; 23. First motor; 24. Sliding frame; 25. First blade; 26. Cross frame; 27. First screw; 28. First nut; 29. ​​Worm gear; 210. Second motor; 211. Worm; 3. First positioning structure; 31. Second bracket; 32. Sliding rod; 33. Mounting frame; 34. Pressing roller; 35. Spring; 4. Second positioning structure; 41. Third bracket; 42. Second screw; 43. Second nut; 44. Limiting plate; 5. Transmission structure; 51. Sprocket; 52. Chain; 53. Hand wheel; 6. Horizontal cutting structure; 61. Fourth bracket; 62. Electric push rod; 63. Bottom plate; 64. Second blade. DETAILED DESCRIPTION

[0028] The technical solution of the utility model is further explained below with reference to the accompanying drawings and through specific implementation methods.

[0029] Among them, the drawings are only used for illustrative explanations, and they only represent schematic diagrams rather than actual pictures, and should not be understood as limitations on this patent; in order to better illustrate the embodiments of the utility model, some parts of the drawings may be omitted, enlarged or reduced, and do not represent the size of the actual product; for those skilled in the art, it is understandable that some well-known structures and their descriptions in the drawings may be omitted.

[0030] The same or similar numbers in the drawings of the embodiments of the present invention correspond to the same or similar parts; in the description of the present invention, it should be understood that if the terms "upper", "lower", "left", "right", "inner", "outer", etc. appear, the orientation or position relationship indicated is based on the orientation or position relationship shown in the drawings, which is only for the convenience of describing the present invention and simplifying the description, rather than indicating or implying that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation. Therefore, the terms describing the position relationship in the drawings are only used for illustrative purposes and cannot be understood as a limitation on this patent. For ordinary technicians in this field, the specific meanings of the above terms can be understood according to specific circumstances.

[0031] In the description of the present invention, unless otherwise clearly specified and limited, if the term "connection" or the like appears to indicate the connection relationship between components, the term should be understood in a broad sense, for example, it can be a fixed connection, a detachable connection, or an integral connection; it can be a mechanical connection or an electrical connection; it can be a direct connection or an indirect connection through an intermediate medium, it can be the internal connection of two components or the interaction relationship between two components. For ordinary technicians in this field, the specific meanings of the above terms in the present invention can be understood according to specific circumstances.

[0032] like Figures 1 to 8As shown, this embodiment provides a rubber sheet positioning and cutting device, including a longitudinal cutting structure 2, a first positioning structure 3, a second positioning structure 4 and a transverse cutting structure 6, the longitudinal cutting structure 2 includes a U-shaped first bracket 21, the first bracket 21 is fixedly mounted on the frame of the conveyor 1, a rotating shaft 22 is rotatably mounted between the inner side walls of the first bracket 21, a first motor 23 is mounted on the first bracket 21, the output shaft of the first motor 23 is transmission-connected to the rotating shaft 22, the first motor 23 can be started to control the rotation of the rotating shaft 22, and the rotation direction of the rotating shaft 22 is the same as the rotation direction of the conveyor belt of the conveyor 1.

[0033] The first bracket 21 is provided with a slide groove, and a plurality of sliding frames 24 are slidably installed on the bottom of the first bracket 21 through the slide groove. A plurality of circular first blades 25 are provided on the rotating shaft 22, and the plurality of first blades 25 are rotatably installed on the plurality of sliding frames 24 respectively. A limit strip is provided on the rotating shaft 22, and a through hole with the same cross-sectional shape and size as the rotating shaft 22 is provided at the center of the circle of the first blade 25. When the rotating shaft 22 passes through the through hole on the first blade 25, the first blade 25 coincides with the axis of the rotating shaft 22. The rotation of the rotating shaft 22 can drive the first blade 25 to rotate, and the sliding frame 24 moves left and right, which can drive the first blade 25 to move left and right to adjust its position on the rotating shaft 22.

[0034] A cross frame 26 is arranged on the top of the plurality of sliding frames 24, and the middle connecting shaft of the sliding frame 24 and the cross frame 26 is fixed, a first screw 27 is rotatably mounted on the first bracket 21, two first nuts 28 are symmetrically arranged on the first screw 27, and the two first nuts 28 are respectively fixed to two opposite connecting shafts on the cross frame 26, a worm wheel 29 is arranged on the first screw 27, a worm 211 is rotatably mounted on the first bracket 21, and the worm 211 is meshed with the worm wheel 29, a second motor 210 is arranged on the first bracket 21, and the output shaft of the second motor 210 is connected to the first bracket 21. The worm 211 is connected for transmission. The left half of the first screw 27 is a left-handed thread, and the right half is a right-handed thread. The second motor 210 can drive the first screw 27 to rotate through the transmission of the worm wheel 29 and the worm 211. The rotation of the first screw 27 can drive the two first nuts 28 to move toward the middle or both sides at the same time. The movement of the two first nuts 28 toward the middle can control the extension of the cross frame 26, thereby increasing the distance between the two adjacent sliding frames 24. The movement of the two first nuts 28 to both sides can control the shortening of the cross frame 26, thereby reducing the distance between the two adjacent sliding frames 24.

[0035] See also Figure 5There are two first positioning structures 3 and they are respectively arranged in front and behind the longitudinal cutting structure 2. The first positioning structure 3 includes a U-shaped second bracket 31, and the second bracket 31 is fixedly installed on the frame of the conveyor 1. Slide grooves are arranged on the inner sides of both sides of the second bracket 31, and slide bars 32 are vertically installed in the slide grooves. A mounting frame 33 is slidably installed between the two slide bars 32, and a pressure roller 34 is rotatably installed on the mounting frame 33. A spring 35 is sleeved on the slide bar 32, and the spring 35 is pressed between the top of the mounting frame 33 and the top of the slide groove on the second bracket 31. By setting the spring 35, the pressure roller 34 can cooperate with the conveyor belt of the conveyor 1 to clamp the rubber sheet.

[0036] See also Figure 6 The second positioning structures 4 have four parts and every two second positioning structures 4 form a group. The two second positioning structures 4 of each group are respectively arranged in front and behind the first positioning structure 3. The second positioning structure 4 includes a U-shaped third bracket 41, which is fixedly mounted on the frame of the conveyor 1. A second screw 42 is rotatably mounted between the inner side walls of the third bracket 41. Two second nuts 43 are symmetrically arranged on the second screw 42, and the two second nuts 43 are slidably mounted on the bottom of the third bracket 41. Limiting plates 44 are installed at the bottoms of the two second nuts 43, and the two limiting plates 44 are symmetrical about the center line of the third bracket 41. A transmission structure 5 is arranged between the two second positioning structures 4 of each group. The left half of the second screw 42 is a left-handed thread, and the right half is a right-handed thread. By rotating the second screw 42, the two second nuts 43 can be controlled to move to the middle or both sides at the same time, thereby adjusting the distance between the two limiting plates 44. The rubber sheet can be limited to the middle position of the conveyor belt of the conveyor 1 through the cooperation of the two limiting plates 44 to prevent the rubber sheet from being skewed when placed.

[0037] See also Figure 7 The transmission structure 5 includes two sprockets 51, a chain 52 and a handwheel 53. The two sprockets 51 are respectively installed on the second screws 42 on the two second positioning structures 4 of the same group. The two sprockets 51 are connected by the chain 52. The handwheel 53 is fixedly installed on one end of the second screw 42 on one of the second positioning structures 4. By rotating the handwheel 53 and coordinating the transmission of the sprocket 51 and the chain 52, the second screws 42 on the two second positioning structures 4 of the same group can be controlled to rotate simultaneously.

[0038] See also Figure 8The transverse cutting structure 6 includes a U-shaped fourth bracket 61, which is fixedly mounted on the frame of the conveyor 1 and close to the conveying end of the conveyor 1. Two electric push rods 62 are installed on the top of the fourth bracket 61, and a bottom plate 63 is provided at the bottom of the fourth bracket 61. The output end of the electric push rod 62 is fixed to the top of the bottom plate 63, and a second blade 64 is installed at the bottom of the bottom plate 63. The electric push rod 62 can drive the second blade 64 at the bottom of the bottom plate 63 to feed downward. After the electric push rod 62 completes one feed, its output end is immediately retracted. The cutting length of the rubber sheet can be adjusted by adjusting the interval time of the electric push rod 62 feeding. The shorter the interval time of the electric push rod 62 feeding, the shorter the cutting length of the rubber sheet.

[0039] The working principle and use process of this utility model:

[0040] When using the rubber sheet positioning and cutting device, first adjust the spacing of the limit plates 44 according to the width of the rubber sheet, and by rotating the hand wheel 53, the second screw 42 can be driven to rotate, thereby controlling the second nuts 43 on both sides to drive the limit plates 44 to move and adjust the spacing. The spacing between the two limit plates 44 can be adjusted to be slightly larger than the width of the rubber sheet, and the rubber sheet is placed between the two limit plates 44. At this time, the rubber sheet is located in the middle position of the conveyor belt of the conveyor 1. When adjusting the cutting width of the device, start the second motor 210, and drive the first screw 27 to rotate through the transmission of the worm gear 29 and the worm 211, and control the first nut 28 Move, thereby controlling the cross frame 26 to extend or shorten, controlling the sliding frame 24 to adjust the spacing, thereby adjusting the spacing of the first blade 25. When cutting the rubber sheet, first set the interval time of the reciprocating motion of the output end of the electric push rod 62, start the conveyor 1, the first motor 23 and the electric push rod 62, the pressure roller 34 cooperates with the conveyor belt of the conveyor 1 to clamp the rubber sheet, and then push the rubber sheet forward through the conveyor belt, the first motor 23 drives the first blade 25 on the rotating shaft 22 to rotate, and cuts the rubber sheet longitudinally into a set width, and the electric push rod 62 pushes the second blade 64 to advance, and cuts the rubber sheet into a set length.

[0041] It should be noted that the above specific implementations are only preferred embodiments of the present invention and the technical principles used. Those skilled in the art should understand that various modifications, equivalent substitutions, changes, etc. can be made to the present invention. However, as long as these changes do not deviate from the spirit of the present invention, they should be within the scope of protection of the present invention. In addition, some terms used in the specification and claims of this application are not restrictive, but are only for the convenience of description.

Claims

1. A rubber sheet positioning and cutting device, characterized in that: The invention comprises a longitudinal cutting structure (2), a first positioning structure (3), a second positioning structure (4) and a transverse cutting structure (6), wherein the longitudinal cutting structure (2) comprises a first bracket (21) in a U shape, the first bracket (21) being fixedly mounted on a frame of a conveyor (1), a rotating shaft (22) being rotatably mounted between inner side walls of the first bracket (21), a first motor (23) being mounted on the first bracket (21), and an output shaft of the first motor (23) being drivingly connected to the rotating shaft (22); The first bracket (21) is provided with a slide groove, and a plurality of sliding frames (24) are slidably mounted on the bottom of the first bracket (21) through the slide groove, and a plurality of circular first blades (25) are arranged on the rotating shaft (22), and the plurality of first blades (25) are rotatably mounted on the plurality of sliding frames (24) respectively; A cross frame (26) is arranged on the top of the plurality of sliding frames (24), the sliding frames (24) and the middle connecting shaft of the cross frame (26) are fixed, a first screw rod (27) is rotatably mounted on the first bracket (21), two first nuts (28) are symmetrically arranged on the first screw rod (27), the two first nuts (28) are respectively fixed to two opposite connecting shafts on the cross frame (26), a worm wheel (29) is arranged on the first screw rod (27), a worm (211) is rotatably mounted on the first bracket (21), and the worm (211) is meshed with the worm wheel (29), a second motor (210) is arranged on the first bracket (21), and the output shaft of the second motor (210) is drivingly connected to the worm (211).

2. The rubber sheet positioning and cutting device according to claim 1, characterized in that: There are two first positioning structures (3) and they are respectively arranged in front and behind the longitudinal cutting structure (2). The first positioning structure (3) includes a U-shaped second bracket (31). The second bracket (31) is fixedly installed on the frame of the conveyor (1). Slide grooves are arranged on the inner sides of both sides of the second bracket (31), and slide bars (32) are vertically installed in the slide grooves. A mounting frame (33) is slidably installed between the two slide bars (32). A pressure roller (34) is rotatably installed on the mounting frame (33). A spring (35) is sleeved on the slide bar (32), and the spring (35) is pressed between the top of the mounting frame (33) and the top of the slide groove on the second bracket (31).

3. The rubber sheet positioning and cutting device according to claim 1, characterized in that: There are four second positioning structures (4), and every two second positioning structures (4) form a group. The two second positioning structures (4) in each group are respectively arranged in front of and behind the first positioning structure (3). The second positioning structure (4) comprises a U-shaped third bracket (41). The third bracket (41) is fixedly mounted on the frame of the conveyor (1). A second screw rod (42) is rotatably mounted between the inner side walls of the third bracket (41). Two second nuts (43) are symmetrically arranged on the second screw rod (42), and the two second nuts (43) are slidably mounted on the bottom of the third bracket (41). Limiting plates (44) are installed at the bottoms of the two second nuts (43), and the two limiting plates (44) are symmetrical about the center line of the third bracket (41). A transmission structure (5) is arranged between the two second positioning structures (4) in each group.

4. The rubber sheet positioning and cutting device according to claim 3, characterized in that: The transmission structure (5) comprises two sprockets (51), a chain (52) and a hand wheel (53); the two sprockets (51) are respectively mounted on second screw rods (42) on two second positioning structures (4) of the same group; the two sprockets (51) are connected to each other through the chain (52); and the hand wheel (53) is fixedly mounted on one end of the second screw rod (42) on one of the second positioning structures (4).

5. The rubber sheet positioning and cutting device according to claim 1, characterized in that: The transverse cutting structure (6) comprises a U-shaped fourth bracket (61), which is fixedly mounted on a frame of the conveyor (1) and close to a conveying end of the conveyor (1), two electric push rods (62) are mounted on the top of the fourth bracket (61), a bottom plate (63) is arranged at the bottom of the fourth bracket (61), the output end of the electric push rod (62) is fixed to the top of the bottom plate (63), and a second blade (64) is mounted at the bottom of the bottom plate (63).

6. The rubber sheet positioning and cutting device according to claim 1, characterized in that: The rotating shaft (22) is provided with a limit strip, and the center of the circle of the first blade (25) is provided with a through hole having the same cross-sectional shape and size as the rotating shaft (22).

7. The rubber sheet positioning and cutting device according to claim 1, characterized in that: The left half of the first screw (27) is a left-handed thread, and the right half is a right-handed thread.

8. The rubber sheet positioning and cutting device according to claim 3, characterized in that: The left half of the second screw (42) is a left-handed thread, and the right half is a right-handed thread.

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