Shearing device for plastic production

Abstract

The utility model relates to the technical field of plastic production, in particular to a shearing device for plastic production, which comprises a placing seat, a portal frame, a cutter, a lifting driving assembly and a pushing assembly, the top surface of the placing seat is a horizontal plane, the portal frame is fixed on the top surface of the placing seat, and the cutter is located between two vertical rods of the portal frame; the lifting driving assembly is fixed to a cross beam of the portal frame, the lifting driving assembly is connected with the cutter to support the cutter and drive the cutter to ascend and descend, and the pushing assembly is installed on the top face of the containing base, located on one side of the cutter and used for pushing the raw rubber block towards the cutter. According to the raw rubber block cutting device, the raw rubber block is continuously pushed through the pushing assembly to be cut into a plurality of small blocks, the raw rubber block does not need to be pushed manually, the labor intensity of workers is relieved, the workers do not need to be close to the cutter when the cutter works, and the safety of the workers is guaranteed.

Description

Technical Field

[0001] This application relates to the technical field of plastic production, and more specifically, to a shearing device for plastic production. Background Technology

[0002] Plastic raw materials are usually large blocks of raw rubber. In plastic product processing, these large blocks need to be cut into smaller pieces for easier subsequent molding. Related technologies require a shearing device to cut these blocks. This device typically includes a raw rubber placement base, a blade holder, a cutter, and a drive mechanism. The raw rubber placement base holds the raw rubber blocks, and the drive mechanism is fixed to the blade holder and connected to the cutter. The cutter is located above the raw rubber placement base. When cutting the raw rubber blocks, the raw rubber blocks are placed on the placement base, and the drive mechanism lowers the cutter to cut the blocks. After each small piece is cut from a large block, the worker needs to push the large block back under the cutter to cut more pieces. This technique is labor-intensive and poses safety hazards for workers. Utility Model Content

[0003] To address the issues of high labor intensity and safety hazards associated with shearing devices in related technologies, which require pushing the raw rubber block under the cutter to cut it into smaller pieces, this application provides a shearing device for plastic production.

[0004] A shearing device for plastic production includes a placement seat, a gantry frame, a cutter, a lifting drive assembly, and a pushing assembly. The top surface of the placement seat is horizontal. The gantry frame is fixed to the top surface of the placement seat. The cutter is located between two vertical bars of the gantry frame. The lifting drive assembly is fixed to the crossbeam of the gantry frame and is connected to the cutter to support and drive the cutter to rise and fall. The pushing assembly is installed on the top surface of the placement seat and located on one side of the cutter. The pushing assembly is used to push raw rubber blocks toward the cutter.

[0005] By adopting the above technical solution, the raw rubber block is placed on the placement seat, and the pushing component pushes the raw rubber block towards the cutting blade. When the raw rubber block is below the cutting blade, the lifting drive component drives the cutting blade to descend and cut the raw rubber block. By continuously pushing the raw rubber block forward by the pushing component, the raw rubber block is cut into several small pieces. There is no need to manually push the raw rubber block, which reduces the labor intensity of the workers. Moreover, the workers do not need to be close to the cutting blade when it is working, which ensures the safety of the workers.

[0006] Preferably, the lifting drive assembly includes a first hydraulic cylinder and a connecting member. The first hydraulic cylinder is fixed on the crossbeam of the gantry frame, and the telescopic shaft of the first hydraulic cylinder points downward. The connecting member is fixedly connected to the end of the telescopic shaft of the first hydraulic cylinder, and the cutter is fixedly connected to the connecting member.

[0007] By adopting the above technical solution, the cutter is raised and lowered by a hydraulic cylinder, which gives the cutter a greater shearing force, making it easier to cut raw rubber blocks.

[0008] Preferably, the inner sides of the two vertical rods of the gantry frame are provided with vertical slide rails, and both ends of the cutter are provided with sliders. One slider is slidably connected to one slide rail, and the other slider is slidably connected to the other slide rail.

[0009] By adopting the above technical solution, the gantry frame provides sliding support for the cutter by sliding the slider on the slide rail, making the cutter more stable when it moves up and down.

[0010] Preferably, the push assembly includes a mounting base, a motor, a lead screw, a threaded sleeve, a connecting plate, and a push rod. The mounting base is fixed to the top surface of the placement seat and located on one side of the cutter. The motor is fixed to the mounting base, and the drive shaft of the motor is fixedly connected to one end of the lead screw. The other end of the lead screw points towards the cutter. The threaded sleeve is fitted onto the lead screw and threadedly connected to it. The connecting plate is fixedly connected to the threaded sleeve. One end of the push rod is fixed to the connecting plate, and the other end of the push rod points towards the cutter.

[0011] By adopting the above technical solution, the motor drives the lead screw to rotate in both directions, so that the threaded sleeve can move back and forth along the length of the lead screw, driving the connecting plate and the push rod to move back and forth. The push rod is used to abut against the raw rubber block. When the threaded sleeve moves towards the cutter, the push rod pushes the raw rubber block and pushes it towards the cutter. The motor-driven lead screw makes it easy to control the movement stroke of the threaded sleeve, which helps to make the push rod's stroke accurate each time, and makes it easier to obtain several small pieces of raw rubber block with uniform thickness when cutting the raw rubber block.

[0012] Preferably, the placement seat is provided with side plates on opposite sides of the push rod, and the two side plates extend close to the cutter.

[0013] By adopting the above technical solution, the raw rubber block is placed between the two side plates. The raw rubber block is limited by the side plates, so that when the push rod pushes the raw rubber block to move, the raw rubber block is not easy to wobble or even deviate from the original path.

[0014] Preferably, it further includes a pressing component, the pressing component including a fixed frame, the fixed frame being connected and fixed to the gantry frame and located on the side of the gantry frame near the pushing component, the pressing component further including a second hydraulic cylinder and a pressing block, the second hydraulic cylinder being fixed on the fixed frame and the telescopic axis of the second hydraulic cylinder being downward and above the path of the pushing component pushing the raw rubber block to move, the pressing block being connected to the telescopic axis of the second hydraulic cylinder.

[0015] By adopting the above technical solution, when the cutter cuts the raw rubber block, the raw rubber block is easily lifted due to the downward pressure on it, which affects the cutting. The second hydraulic cylinder drives the pressing block to press down on the raw rubber block, making it less likely for the raw rubber block to lift up, thus making the cutting process smoother.

[0016] Preferably, the top surface of the placement seat is recessed below the cutter, the groove extends through the side wall of the placement seat in a direction away from the cutter and the pusher assembly, and the bottom surface of the groove is an inclined surface.

[0017] By adopting the above technical solution, the groove is used to avoid the cutter, preventing the cutter from contacting the placement seat when it descends, thus reducing the possibility of cutter damage. The inclined surface facilitates the guidance of the raw rubber block that falls into the groove out of the placement seat, realizing automatic material unloading of raw rubber block, reducing the need for manual handling and further reducing the labor intensity of workers.

[0018] In summary, this application includes at least one of the following beneficial technical effects:

[0019] 1. Place the raw rubber block on the placement seat, and push the raw rubber block towards the cutter using the pusher assembly. When the raw rubber block is below the cutter, the lifting drive assembly drives the cutter to descend and cut the raw rubber block. By continuously pushing the raw rubber block with the pusher assembly, the raw rubber block is cut into several small pieces. There is no need to manually push the raw rubber block, which reduces the labor intensity of the workers. Moreover, the workers do not need to be close to the cutter when the cutter is working, which ensures the safety of the workers.

[0020] 2. When the cutter cuts the raw rubber block, the downward pressure on the raw rubber block can easily cause it to lift up, affecting the cutting process. The second hydraulic cylinder drives the pressure block to press down on the raw rubber block, making it less likely for the raw rubber block to lift up and making the cutting process smoother.

[0021] 3. The groove is designed to avoid contact between the cutter and the placement seat when the cutter descends, thus reducing the risk of cutter damage. The inclined surface facilitates the guidance of the raw rubber block that falls into the groove out of the placement seat, realizing automatic raw rubber block unloading and reducing the need for manual handling, further reducing the labor intensity of the workers. Attached Figure Description

[0022] Figure 1This is a schematic diagram of the first angle of a shearing device for plastic production according to this embodiment.

[0023] Figure 2 This is a schematic diagram of the second angle of a shearing device for plastic production according to this embodiment.

[0024] Reference numerals: 1. Placement seat; 11. Side plate; 12. Groove; 13. Inclined surface; 2. Gantry frame; 21. Slide rail; 3. Cutter; 31. Slider; 4. Lifting drive assembly; 41. First hydraulic cylinder; 42. Connector; 5. Pushing assembly; 51. Mounting seat; 52. Motor; 53. Lead screw; 54. Threaded sleeve; 55. Connecting plate; 56. Push rod; 57. Guide rod; 58. Guide sleeve; 6. Pressing assembly; 61. Fixing frame; 611. Vertical plate; 612. Horizontal plate; 62. Second hydraulic cylinder; 63. Pressing block. Detailed Implementation

[0025] The technical solutions of the embodiments of this application will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are only some embodiments of this application, and not all embodiments. Based on the embodiments of this application, all other embodiments obtained by those skilled in the art without creative effort are within the scope of protection of this application.

[0026] Reference Figure 1 A shearing device for plastic production includes a placement base 1, a gantry frame 2, a cutter 3, a lifting drive assembly 4, a pushing assembly 5, and a pressing assembly 6. The top surface of the placement base 1 is horizontal. The gantry frame 2 is fixed to the top surface of the placement base 1. The cutter 3 is located between two vertical rods of the gantry frame 2, and vertical slide rails 21 are provided on the inner sides of both vertical rods of the gantry frame 2. Slider blocks 31 are provided at both ends of the cutter 3. One slider 31 is slidably connected to one slide rail 21, and the other slider 31 is slidably connected to the other slide rail 21, so that the gantry frame 2 provides sliding support for the cutter 3. The lifting drive assembly 4 is fixed to the crossbeam of the gantry frame 2 and connected to the cutter 3 to support the cutter 3 and drive the cutter 3 to rise and fall, so as to realize the shearing by the cutter 3. The raw rubber block is pushed by the pusher assembly 5, which is installed on the top surface of the placement base 1 and located on one side of the cutter 3. The pusher assembly 5 is used to push the raw rubber block towards the cutter 3, so that the raw rubber block falls continuously into the cutting range of the cutter 3 and is cut into several small pieces by the cutter 3. The raw rubber block does not need to be pushed manually, which reduces the labor intensity of the workers. Moreover, the workers do not need to be close to the cutter 3 when the cutter 3 is running, which ensures the safety of the workers. The pressure assembly 6 is fixed on the side of the gantry 2 near the pusher assembly 5 and is located above the moving path of the pusher assembly 5 pushing the raw rubber block. The pressure assembly 6 presses the raw rubber block so that the raw rubber block is not easy to lift when it is pressed down and cut by the cutter 3, making the cutter 3 cut the raw rubber block more smoothly.

[0027] Reference Figure 1 The lifting drive assembly 4 includes two first hydraulic cylinders 41 and two connecting parts 42. Both first hydraulic cylinders 41 are fixed to the top surface of the crossbeam of the gantry frame 2, and the telescopic shafts of the two first hydraulic cylinders 41 pass through the crossbeam. The two first hydraulic cylinders 41 are arranged at intervals on the crossbeam of the gantry frame 2. The end of the telescopic shaft of each first hydraulic cylinder 41 is connected to a connecting part 42. Both connecting parts 42 are connected to the cutter 3. The cutter 3 is driven to rise and fall by the two first hydraulic cylinders 41, so that the cutter 3 has a large shearing force and it is easier to cut raw rubber blocks.

[0028] Reference Figure 1 The push assembly 5 includes a mounting base 51, a motor 52, a lead screw 53, a threaded sleeve 54, a connecting plate 55, a push rod 56, a guide rod 57, and a guide sleeve 58. The mounting base 51 is fixed to the top surface of the placement base 1 and located on one side of the cutter 3. The motor 52 is fixed to the mounting base 51, and the drive shaft of the motor 52 is fixedly connected to one end of the lead screw 53. The motor 52 drives the lead screw 53 to rotate in both directions, and the other end of the lead screw 53 points towards the cutter 3. The threaded sleeve 54 is fitted onto the lead screw 53 and threadedly connected to the lead screw 53. The connecting plate 55 is threadedly connected to the threaded sleeve 54. By rotating the lead screw 53 in both directions, the threaded sleeve 54 reciprocates along the length of the lead screw 53. The connecting plate 55 is fixedly connected to the threaded sleeve 54. The push rod 56 is fixed at one end to the connecting plate 55, and the center of the push rod 56 is on the same straight line as the axis of the lead screw 53. The push rod 56 is provided with an opening to avoid the lead screw 53. The lead screw 53 passes through the opening and is avoided. The end of the push rod 56 away from the connecting plate 55 points to the cutter 3, and this end is provided with a push plate to increase the contact area with the raw rubber block. The push plate contacts the raw rubber block. When the threaded sleeve 54 moves in the direction of the cutter 3, the push rod 56 pushes the raw rubber block and pushes the raw rubber block in the direction of the cutter 3. The motor 52 drives the lead screw 53 to control the movement stroke of the threaded sleeve 54, which helps to make the push rod 56 accurate each time and makes it easier to obtain several small pieces of raw rubber block with uniform thickness when cutting the raw rubber block.

[0029] Reference Figure 1 There are two guide rods 57, which are placed on both sides of the lead screw 53 and one end of each guide rod 57 is fixedly connected to the fixed seat. The guide rods 57 are parallel to the lead screw 53. There are two guide sleeves 58 matching the number of guide rods 57. Both guide sleeves 58 are fixed on the connecting plate 55. Each guide sleeve 58 is fitted onto one guide rod 57, so that the connecting plate 55 is slidably supported by the guide rods 57, making the movement of the connecting plate 55 more stable.

[0030] Reference Figure 1The base 1 is provided with side plates 11 on both sides of the push rod 56. The two side plates 11 extend to the cutter 3. When the raw rubber block is placed between the two side plates 11, the raw rubber block is limited by the side plates 11, so that when the push rod 56 pushes the raw rubber block to move, the raw rubber block is not easy to wobble or even deviate from the original path.

[0031] Reference Figure 1 The pressing assembly 6 includes a fixed frame 61, a second hydraulic cylinder 62, and a pressing block 63. The fixed frame 61 includes a vertical plate 611 and a horizontal plate 612. The vertical plate 611 is fixed to the crossbeam of the gantry frame 2 and is located on the side of the crossbeam of the gantry frame 2 near the pushing assembly 5, and the vertical plate 611 extends downward. The horizontal plate 612 is fixed to the top of the vertical plate 611. The second hydraulic cylinder 62 is fixed to the top surface of the horizontal plate 612, and the telescopic shaft of the second hydraulic cylinder 62 passes through the horizontal plate 612. The telescopic shaft of the second hydraulic cylinder 62 is located within the pushing assembly. Above the moving path of the pusher block 5, the pressing block 63 is connected to the telescopic shaft of the second oil cylinder 62. The second oil cylinder 62 drives the pressing block 63 to rise and fall, so that the pressing block 63 presses down on the raw rubber block. The pusher 56 pushes the raw rubber block to move a certain distance each time, so that the raw rubber block is within the cutting range of the cutter 3. After the raw rubber block stops moving, the second oil cylinder 62 drives the pressing block 63 to press against the raw rubber block. The pressing block 63 presses against the raw rubber block so that the raw rubber block is not easy to lift up when being cut, so that the cutting process is smoother.

[0032] Reference Figure 2 A groove 12 is recessed on the top surface of the placement seat 1 and below the cutter 3. The groove 12 extends through the side wall of the placement seat 1 in the direction away from the cutter 3. The groove 12 is used to avoid the cutter 3 and prevent the cutter 3 from contacting the placement seat 1 when it descends, thereby reducing the possibility of damage to the cutter 3. The bottom surface of the groove 12 is an inclined surface 13. The inclined surface 13 facilitates the guidance of the raw rubber block that falls into the groove 12 out of the placement seat 1, realizing automatic material unloading of raw rubber block, reducing the need for manual handling of material unloading, and further reducing the labor intensity of the workers.

[0033] Although embodiments of this application have been shown and described, it will be understood by those skilled in the art that various changes, modifications, substitutions and variations can be made to these embodiments without departing from the principles and spirit of this application, the scope of which is defined by the appended claims and their equivalents.

Claims

1. A shearing device for plastic production, characterized in that: The device includes a placement base, a gantry frame, a cutter, a lifting drive assembly, and a pushing assembly. The top surface of the placement base is horizontal. The gantry frame is fixed to the top surface of the placement base. The cutter is located between two vertical bars of the gantry frame. The lifting drive assembly is fixed to the crossbeam of the gantry frame and is connected to the cutter to support and drive the cutter to rise and fall. The pushing assembly is installed on the top surface of the placement base and located on one side of the cutter. The pushing assembly is used to push the raw rubber block towards the cutter.

2. The shearing device for plastic production according to claim 1, characterized in that: The lifting drive assembly includes a first hydraulic cylinder and a connecting member. The first hydraulic cylinder is fixed on the crossbeam of the gantry frame. The telescopic shaft of the first hydraulic cylinder points downwards. The connecting member is fixedly connected to the end of the telescopic shaft of the first hydraulic cylinder. The cutter is fixedly connected to the connecting member.

3. The shearing device for plastic production according to claim 1, characterized in that: The inner sides of the two vertical bars of the gantry frame are provided with vertical slide rails, and both ends of the cutter are provided with sliders. One slider is slidably connected to one slide rail, and the other slider is slidably connected to the other slide rail.

4. The shearing device for plastic production according to claim 1, characterized in that: The push assembly includes a mounting base, a motor, a lead screw, a threaded sleeve, a connecting plate, and a push rod. The mounting base is fixed to the top surface of the placement seat and located on one side of the cutter. The motor is fixed to the mounting base, and the drive shaft of the motor is fixedly connected to one end of the lead screw. The other end of the lead screw points towards the cutter. The threaded sleeve is fitted onto the lead screw and threadedly connected to it. The connecting plate is fixedly connected to the threaded sleeve. One end of the push rod is fixed to the connecting plate, and the other end of the push rod points towards the cutter.

5. A shearing device for plastic production according to claim 4, characterized in that: The placement seat is provided with side plates on opposite sides of the push rod, and the two side plates extend close to the cutter.

6. A shearing device for plastic production according to claim 1, characterized in that: It also includes a pressing component, which includes a fixed frame. The fixed frame is connected and fixed to the gantry frame and is located on the side of the gantry frame near the pushing component. The pressing component also includes a second hydraulic cylinder and a pressing block. The second hydraulic cylinder is fixed on the fixed frame and its telescopic axis is downward and above the path of the pushing component pushing the raw rubber block. The pressing block is connected to the telescopic axis of the second hydraulic cylinder.

7. A shearing device for plastic production according to claim 1, characterized in that: The top surface of the placement seat has a recessed groove below the cutter. The groove extends through the side wall of the placement seat in a direction away from the cutter and the pusher assembly. The bottom surface of the groove is an inclined surface.

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