Plate production raw material screening equipment

Abstract

The plate production raw material screening equipment comprises a screening box, a supporting frame, a screening net, a winding adjusting mechanism and a net pressing assembly, the screening box is obliquely arranged, a discharging opening faces downwards, a material passing groove is formed in the bottom end of the interior of the screening box, and a discharging plate is fixedly connected to the position, located below the material passing groove, of the bottom of the screening box; the bottom of the screening box is further fixedly connected with a fixing frame, and a vibration motor is installed on the fixing frame. The screening device has the beneficial effects that the arranged screening net is composed of multiple sections of net bodies with different specifications of meshes, two sets of winding adjusting mechanisms are arranged, one set of winding adjusting mechanisms is used for winding the screening net, the other set of winding adjusting mechanisms is used for unwinding the screening net, and therefore the position of the screening net is adjusted, and the screening nets with the different specifications of mesh bodies are moved to a material passing groove; and therefore, the device is suitable for screening plate production raw materials of different specifications, the specification of the screening net can be rapidly and conveniently replaced, and operation is convenient and fast.

Description

Technical Field

[0001] The present invention relates to the technical field of sheet production, and particularly relates to a screening device for raw materials in sheet production. Background Art

[0002] In the process of sheet production, the screening of raw materials is an important link. By selecting appropriate raw materials and adopting scientific screening methods and processes, the quality and performance of the sheet can be ensured to meet the requirements. During the production of decorative sheets inside automobiles, granular raw materials usually need to be screened, and a screening box is usually used for work during use. A screening net is arranged inside the screening box.

[0003] In the prior art, Chinese Patent Publication No. CN 215390746U discloses a raw material screening device for the production of interior trim sheets for vehicles, including a screening box. The bottom of the screening box is connected to a support plate through a telescopic device. The telescopic device includes a fixed plate, a movable rod, a telescopic spring, and a fixed cylinder. The top of the support plate is fixed with a fixed cylinder, the fixed plate is fixed to the side wall of the screening box, one end of the movable rod is fixed to the fixed plate and the other end is inserted into the fixed cylinder, and the telescopic spring is wound around the outer wall of the movable rod and used to connect the fixed plate and the fixed cylinder. By driving the motor to work to drive the rotating block to rotate, at this time, the rotating block can drive the vertical rack and the screening box to move up and down, so as to achieve a vibration effect, thereby improving the screening work efficiency. However, its screening net is fixedly arranged inside the screening box, resulting in the non-replaceability of the screening net. When screening raw materials for different specifications of sheet production, it is necessary to disassemble and replace the screening box or the screening net inside the screening box, and the operation is troublesome. Summary of the Invention

[0004] Aiming at the deficiencies of the prior art, the present invention provides a screening device for raw materials in sheet production, which can solve the problem in the prior art that the screening net in the screening device for raw materials in sheet production is fixedly arranged inside the screening box, and when screening raw materials for different specifications of sheet production, it is necessary to disassemble and replace the screening box or the screening net inside the screening box, and the operation is troublesome.

[0005] The present invention provides the following technical solutions. A screening device for raw materials in sheet production includes: a screening box, which is inclined and the discharge port faces downward. A material passing groove is opened at the bottom end inside the screening box. A discharge plate is fixedly connected to the bottom of the screening box and located below the material passing groove. A fixed frame is also fixedly connected to the bottom of the screening box, and a vibration motor is installed on the fixed frame;

[0006] A support frame, which is arranged below the screening box. Shock absorbers are fixedly connected between the four weeks at the bottom of the screening box and the support frame;

[0007] The screening net is composed of multiple sections of mesh bodies with different specifications of mesh holes. Both the front and rear ends of the screening box are provided with first through grooves communicating with the inside along the length direction. A second through groove is provided on one side inside the screening box, and the second through groove communicates with the two first through grooves. Both ends of the screening net pass through the first through grooves and the second through groove, and the screening net covers the top of the material passing groove of the screening box;

[0008] The winding and adjusting mechanism is provided with two groups, respectively placed at the front and rear ends of the screening box. Both ends of the screening net are wound around the two winding and adjusting mechanisms respectively, and are used to adjust the positions of the mesh bodies with different specifications of mesh holes of the screening net in the material passing groove;

[0009] The mesh pressing assembly is installed on the screening box and is used to press and fix the screening net.

[0010] As a preferred solution of the present invention, the winding and adjusting mechanism includes a winding roller. Both ends of the winding roller are rotatably connected with mounting seats, and the mounting seats are fixedly installed on the outer wall of the screening box. One end of the screening net is wound around the winding roller. A roller hole is axially provided at the center of the winding roller, and a driving shaft is slidably installed in the roller hole. Both ends of the driving shaft extend to the outside of the winding roller. One end of the driving shaft is fixedly connected with a rotating wheel, and a locking component is provided between the driving shaft and the winding roller.

[0011] As a preferred solution of the present invention, a pair of limiting strips are fixedly connected along the axial direction on the inner wall of the roller hole, and a pair of limiting grooves for accommodating the limiting strips are axially provided on the outer surface of the driving shaft. The length of the limiting groove is greater than the length of the limiting strip.

[0012] As a preferred solution of the present invention, the locking component includes a positioning circular block fixedly sleeved on the driving shaft near the rotating wheel. A positioning groove for accommodating the positioning circular block is provided on the outside of one of the mounting seats. A plurality of card slots are equidistantly provided along the circumferential direction on the outer wall of the positioning circular block, and a plurality of blocks for aligning and snapping into the card slots are provided on the inner wall of the positioning groove.

[0013] As a preferred solution of the present invention, the locking component further includes a fixing ring provided outside the positioning groove. The fixing ring is fixedly connected with the mounting seat, and a plurality of adjusting bolts are threadedly connected equidistantly along the circumferential direction on the fixing ring.

[0014] As a preferred solution of the present invention, the mesh pressing assembly includes a moving plate and a pressing plate. A lower accommodating groove is provided on the screening box below the first through groove and the second through groove. The moving plate is slidably installed in the lower accommodating groove, and a plurality of first resetting members are fixedly connected between the bottom of the moving plate and the inner bottom end of the lower accommodating groove. An upper accommodating groove is provided on the screening box at the top of the first through groove and the second through groove. The pressing plate is slidably installed in the upper accommodating groove. A plurality of rollers are rotatably connected to the top end of the moving plate, and through holes for the rollers to pass through are provided between the first through groove, the second through groove and the lower accommodating groove.

[0015] As a preferred embodiment of the present invention, connecting blocks are fixedly connected to both ends and the middle position between the moving plate and the pressing plate. An avoidance groove for accommodating the connecting blocks and allowing the connecting blocks to move is provided between the lower accommodating groove and the upper accommodating groove. A linkage assembly is provided between the pressing plate and the driving shaft.

[0016] As a preferred embodiment of the present invention, the linkage assembly includes a pair of L-shaped connecting rods fixedly connected to the pressing plate. Two through grooves communicating with the upper accommodating groove are provided on the outer wall of the screening box. The through grooves correspond to the positions of the L-shaped connecting rods. One end of the L-shaped connecting rod passes through the through groove and is provided with an adjustment groove.

[0017] As a preferred embodiment of the present invention, the linkage assembly further includes a pair of guide sleeves fixedly connected to the screening box. Guide rods are slidably connected inside the guide sleeves. One ends of the two guide rods close to the L-shaped connecting rods are commonly fixedly connected to a connecting plate. One side of the connecting plate is fixedly connected to a pair of adjustment blocks. The adjustment blocks correspond to the positions of the L-shaped connecting rods. One end of the adjustment block is inserted into the adjustment groove. A slope for cooperative sliding is provided between the adjustment block and the inner bottom end of the adjustment groove. The other ends of the guide rods are connected with limit nuts. A second reset member is sleeved outside the guide rods between the limit nuts and the guide sleeves.

[0018] As a preferred embodiment of the present invention, the end of the driving shaft away from the rotating wheel is in contact with the connecting plate. A ball is rotatably connected to the end of the driving shaft in contact with the connecting plate.

[0019] The beneficial effects of the present invention are as follows:

[0020] 1. In the present invention, the screening mesh is composed of a plurality of mesh bodies with different specifications of mesh holes. Through the two sets of winding and adjustment mechanisms provided, one set is used to wind the screening mesh, and the other set is used to unwind the screening mesh, so as to adjust the position of the screening mesh, and move the screening mesh with mesh bodies of different specifications of mesh holes to the material passing groove for screening the raw materials for plate production, realizing the replacement of the specifications of the screening mesh, so as to be applicable to the screening of raw materials for plates of different specifications, and can quickly and conveniently replace the specifications of the screening mesh, with convenient operation and high practicability;

[0021] When the position of the screen mesh is adjusted, the pressing plate and the pressing plate are pressed and fixed in the first through slot and the second through slot, thereby improving the position fixing effect of the screen mesh and avoiding the position deviation of the screen mesh during screening. The linkage component is provided to control the winding adjustment mechanism and the pressing plate in linkage control, so that when the driving shaft is locked, the pressing plate can be automatically driven to realize the position fixing effect of the screen mesh. When the position of the screen mesh is adjusted, the pressing plate and the moving plate are automatically lifted to release the position fixing effect of the screen mesh, thereby greatly improving the convenience of operation. BRIEF DESCRIPTION OF THE DRAWINGS

[0022] Figure 1 Schematic diagram of the overall structure of the raw material screening equipment for plate production Figure 1 ;

[0023] Figure 2 Schematic diagram of the overall structure of the raw material screening equipment for plate production Figure 2 ;

[0024] Figure 3 It is a schematic diagram of the screening box and the discharge plate structure;

[0025] Figure 4 It is a schematic diagram of the structure of the first through slot and the second through slot of the screening box;

[0026] Figure 5 It is a schematic diagram of the screening network structure;

[0027] Figure 6 It is a schematic diagram of the structure of the winding adjustment mechanism;

[0028] Figure 7 It is a schematic diagram of the disassembled structure of the winding adjustment mechanism;

[0029] Figure 8 It is a schematic diagram of the structure of the screen pressing assembly in the screening box;

[0030] Figure 9 It is a schematic diagram of the structure of the screen pressing component and the linkage component;

[0031] Figure 10 It is a schematic diagram of the linkage component structure;

[0032] Figure 11 It is a schematic diagram of the structure of the linkage component;

[0033] In the figure: 1, support frame; 2, screening box; 201, first through groove; 202, second through groove; 203, lower accommodation groove; 204, upper accommodation groove; 3, shock absorber; 4, discharge plate; 5, screening mesh; 6, winding and adjusting mechanism; 601, winding roller; 6011, roller hole; 6012, limiting strip; 6013, positioning groove; 602, mounting seat; 603, drive shaft; 6031, limiting groove; 6032, rotating wheel; 6033, positioning round block; 6041, fixing ring; 6042, adjusting bolt; 7, fixing frame; 701, vibration motor; 8, mesh pressing assembly; 801, moving plate; 802, roller; 803, first resetting member; 804, pressing plate; 805, connecting block; 9, linkage assembly; 901, L-shaped connecting rod; 9011, adjusting groove; 902, guide sleeve; 903, guide rod; 904, connecting plate; 905, adjusting block; 906, second resetting member. Detailed implementation manners

[0034] To make the technical problems solved by the present invention, the technical solutions adopted and the achieved technical effects clearer, the technical solutions of the embodiments of the present invention will be further described in detail below with reference to the drawings. Obviously, the described embodiments are part of the embodiments of the present invention, rather than all of them. Based on the embodiments of the present invention, all other embodiments obtained by those skilled in the art without creative efforts belong to the scope of protection of the present invention.

[0035] Embodiment:

[0036] As Figures 1 to 11 shown, a screening device for raw materials in sheet production includes: a screening box 2, a support frame 1, a screening mesh 5, a winding and adjusting mechanism 6, and a mesh pressing assembly 8. The screening box 2 is inclined and the discharge port faces downward. A material passing groove is opened at the inner bottom end of the screening box 2. A discharge plate 4 is fixedly connected to the bottom of the screening box 2 and below the material passing groove. A fixing frame 7 is also fixedly connected to the bottom of the screening box 2, and a vibration motor 701 is installed on the fixing frame 7; the support frame 1 is arranged below the screening box 2, and shock absorbers 3 are fixedly connected between the four peripheries of the bottom of the screening box 2 and the support frame 1; the screening mesh 5 is composed of mesh bodies with different specifications of mesh holes. First through grooves 201 communicating with the inside are opened along the length direction at both the front and rear ends of the screening box 2. A second through groove 202 is opened on one side inside the screening box 2, and the second through groove 202 communicates with the two first through grooves 201. Both ends of the screening mesh 5 pass through the first through grooves 201 and the second through groove 202, and the screening mesh 5 covers the top of the material passing groove of the screening box 2; two groups of winding and adjusting mechanisms 6 are arranged at the front and rear ends of the screening box 2 respectively, and both ends of the screening mesh 5 are respectively wound on the two winding and adjusting mechanisms 6 for adjusting the positions of the mesh bodies with different specifications of mesh holes of the screening mesh 5 in the material passing groove; the mesh pressing assembly 8 is installed on the screening box 2 for pressing and fixing the screening mesh 5.

[0037] In this embodiment, the raw materials for sheet production are placed into the screening box 2 from the direction away from the discharge port of the screening box 2. Through the inclined screening box 2 and the operation of the vibration motor 701, the raw materials for sheet production move along the screening box 2 towards its discharge port for vibration screening. The screening net 5 is used to screen the raw materials for sheet production. The large-particle raw materials are retained in the screening box 2 and discharged and collected from the discharge port. The small-particle raw materials pass through the screening net 5 and fall onto the discharge plate 4 for discharge and collection, which is used for the screening work of the raw materials for sheet production. The screening net 5 is composed of a net body with multiple sections of different specifications of mesh holes. Through the two sets of winding and adjustment mechanisms 6 provided, one set is used to wind the screening net 5, and the other set is used to unwind the screening net 5, so as to adjust the position of the screening net 5, and move the screening net 5 with different specifications of mesh holes to the material passing trough. Then, the screening net 5 is fixed on the screening box 2 through the net pressing assembly 8, which is used to screen the raw materials for sheet production, realize the replacement of the specifications of the screening net 5, and thus be applicable to the screening of raw materials for sheet production of different specifications. It can quickly and conveniently replace the specifications of the screening net 5, with convenient operation and high practicability.

[0038] In this embodiment, the screening net 5 is made of a woundable metal material, so that the screening net 5 can be wound and stored. The net bodies with multiple sections of different specifications of mesh holes are connected together to form the screening net 5. The net bodies with multiple sections of different specifications of mesh holes are arranged according to the size of the mesh hole specifications. The length of each net body with different specifications of mesh holes is greater than the width of the screening box 2, so that each net body can cover the material passing trough.

[0039] In this embodiment, as Figure 6 and Figure 7As shown in the figure, the rewinding adjustment mechanism 6 includes a rewinding roller 601. Both ends of the rewinding roller 601 are rotatably connected to mounting seats 602, and the mounting seats 602 are fixedly installed on the outer wall of the screening box 2. One end of the screening mesh 5 is wound around the rewinding roller 601. An axial roller hole 6011 is formed at the center of the rewinding roller 601. A driving shaft 603 is slidably installed in the roller hole 6011. Both ends of the driving shaft 603 extend outside the rewinding roller 601. One end of the driving shaft 603 is fixedly connected to a rotating wheel 6032. A locking component is arranged between the driving shaft 603 and the rewinding roller 601. A pair of limiting strips 6012 are fixedly connected to the inner wall of the roller hole 6011 along the axial direction. A pair of limiting grooves 6031 for accommodating the limiting strips 6012 are axially formed on the outer surface of the driving shaft 603. The length of the limiting groove 6031 is greater than the length of the limiting strip 6012. During use, due to the limiting effect of the limiting strip 6012 and the limiting groove 6031 between the driving shaft 603 and the rewinding roller 601, the driving shaft 603 and the rewinding roller 601 rotate synchronously. By rotating the rotating wheel 6032, the driving shaft 603 can be driven to rotate, thereby realizing the rotation operation of the rewinding roller 601 for winding or unwinding the screening mesh 5, adjusting the position of the screening mesh 5, and replacing the mesh body of the screening mesh 5. After the adjustment of the screening mesh 5 is completed, the driving shaft 603 is locked by the locking component to restrict the rotation of the rewinding roller 601.

[0040] In this embodiment, as Figure 7 shown, the locking component includes a positioning circular block 6033 fixedly sleeved on the driving shaft 603 near the rotating wheel 6032. A positioning groove 6013 for accommodating the positioning circular block 6033 is formed on the outside of one of the mounting seats 602. A plurality of card slots are equidistantly arranged on the outer wall of the positioning circular block 6033 along the circumferential direction. A plurality of blocks that are aligned and inserted into the card slots are arranged on the inner wall of the positioning groove 6013. When the rewinding roller 601 is rotated, the driving shaft 603 is moved away from the rewinding roller 601, so that the positioning circular block 6033 is disengaged from the positioning groove 6013. At this time, the rotation operation of the rewinding roller 601 can be realized by rotating the driving shaft 603. After the position of the screening mesh 5 is adjusted by the rewinding roller 601, the driving shaft 603 is moved towards the rewinding roller 601, so that the positioning circular block 6033 is inserted into the positioning groove 6013, and the blocks in the positioning groove 6013 are aligned and inserted into the card slots of the positioning circular block 6033 to radially lock the driving shaft 603.

[0041] In this embodiment, as Figure 7As shown, the locking component further includes a fixing ring 6041 disposed outside the positioning groove 6013. The fixing ring 6041 is fixedly connected to the mounting seat 602. A plurality of adjusting bolts 6042 are threadedly connected to the fixing ring 6041 at equal intervals in the circumferential direction. By rotating the adjusting bolts 6042, the relative positions of the adjusting bolts 6042 on the fixing ring 6041 can be adjusted, so that one end of the adjusting bolt 6042 blocks outside the positioning circular block 6033 to prevent the positioning circular block 6033 from disengaging from the positioning groove 6013, radially limiting the drive shaft 603, thereby realizing the locking function of the drive shaft 603.

[0042] In this embodiment, as Figure 8 and Figure 9 shown, the screen pressing component 8 includes a moving plate 801 and a pressing plate 804. A lower receiving groove 203 is formed in the screening box 2 below the first through groove 201 and the second through groove 202. The moving plate 801 is slidably installed in the lower receiving groove 203. A plurality of first resetting members 803 are fixedly connected between the bottom of the moving plate 801 and the inner bottom end of the lower receiving groove 203. The first resetting members 803 are preferably springs. An upper receiving groove 204 is formed in the screening box 2 at the top of the first through groove 201 and the second through groove 202. The pressing plate 804 is slidably installed in the upper receiving groove 204. A plurality of rollers 802 are rotatably connected to the top end of the moving plate 801. Through holes for the rollers 802 to pass through are formed between the first through groove 201 and the second through groove 202 and the lower receiving groove 203. Connecting blocks 805 are fixedly connected to both ends and the middle position between the moving plate 801 and the pressing plate 804. An avoidance groove for accommodating the connecting blocks 805 and allowing the connecting blocks 805 to move is formed between the lower receiving groove 203 and the upper receiving groove 204. By arranging the moving plate 801 and the pressing plate 804 at the first through groove 201 and the second through groove 202 and connecting the moving plate 801 and the pressing plate 804 through the connecting blocks 805, the moving plate 801 and the pressing plate 804 can move synchronously. When the screening net 5 is adjusted in position, under the action of the first resetting members 803, the moving plate 801 and the pressing plate 804 are pushed up, so that the pressing plate 804 is received in the upper receiving groove 204, the moving plate 801 moves to the inner top end of the lower receiving groove 203, and part of the rollers 802 on the moving plate 801 pass through the through holes and are placed in the first through groove 201 and the second through groove 202. By contacting the screening net 5 through the rollers 802, the friction force when the screening net 5 is adjusted in position is reduced, which helps the screening net 5 to move and adjust better. When the position adjustment of the screening net 5 is completed, by pressing down the pressing plate 804, at this time, the moving plate 801 moves downward in the lower receiving groove 203, compresses the first resetting members 803, and drives the rollers 802 to also move into the lower receiving groove 203, while the pressing plate 804 presses and fixes the screening net 5 in the first through groove 201 and the second through groove 202, improving the position fixing effect on the screening net 5 and preventing the screening net 5 from shifting during the screening process.

[0043] In this embodiment, if Figure 9 , Figure 10 and Figure 11 As shown, a linkage assembly 9 is arranged between the pressing plate 804 and the driving shaft 603, and the linkage assembly 9 includes a pair of L-shaped connecting rods 901 fixedly connected to the pressing plate 804, and two through grooves communicating with the upper accommodating groove 204 are provided on the outer wall of the screening box 2, and the through grooves correspond to the positions of the L-shaped connecting rods 901, and one end of the L-shaped connecting rod 901 passes through the through groove and is provided with an adjustment groove 9011, and the linkage assembly 9 also includes a pair of guide sleeves 902 fixedly connected to the screening box 2, and a guide rod 903 is slidably connected in the guide sleeve 902, and one end of the two guide rods 903 close to the L-shaped connecting rod 901 is commonly fixedly connected to a connecting plate 904, and one side of the connecting plate 904 is fixedly connected to a pair of adjustment blocks 90 5. The adjusting block 905 corresponds to the position of the L-shaped connecting rod 901. One end of the adjusting block 905 is inserted into the adjusting groove 9011. The adjusting block 905 and the bottom end of the adjusting groove 9011 are provided with a matching sliding inclined surface. The other end of the guide rod 903 is connected with a limiting nut. A second reset member 906 is sleeved between the limiting nut and the guide sleeve 902 and located on the outer side of the guide rod 903. The second reset member 906 is preferably a spring. One end of the driving shaft 603 away from the rotating wheel 6032 contacts the connecting plate 904. The end of the driving shaft 603 in contact with the connecting plate 904 is rotatably connected with a ball. When the driving shaft 603 in the winding adjustment mechanism 6 is locked, the driving shaft 603 moves along the winding roller 6 01 moves horizontally, one end of the driving shaft 603 contacts the connecting plate 904, and pushes the connecting plate 904 to move in the direction of the L-shaped connecting rod 901. During the movement of the connecting plate 904, the guide rod 903 slides in the guide sleeve 902, which plays a role of limiting and guiding the connecting plate 904, thereby improving the stability of the movement of the connecting plate 904, so that the adjustment block 905 gradually goes deeper into the adjustment groove 9011 of the L-shaped connecting rod 901, and the adjusting block 905 and the bottom end of the adjusting groove 9011 are provided with a matching sliding inclined surface, which drives the L-shaped connecting rod 901 to move downward, and the L-shaped connecting rod 901 drives the pressing plate 804 to move downward, realizing the downward pressing action of the pressing plate 804, so that when the driving When the shaft 603 is locked, it can automatically drive the pressure plate 804 to fix the position of the screening net 5. When the driving shaft 603 rotates the winding roller 601, the driving shaft 603 moves in the direction away from the connecting plate 904. At this time, the guide rod 903 and the connecting plate 904 are reset under the action of the second reset member 906. Under the action of the first reset member 803, the movable plate 801 and the pressure plate 804 are pushed up, so that when the position of the screening net 5 is adjusted, the pressure plate 804 and the movable plate 801 are automatically lifted up to release the fixing effect on the position of the screening net 5. Under the action of the linkage component 9, the winding adjustment mechanism 6 and the pressure net component 8 are linked and controlled, which greatly improves the convenience of operation.

[0044] Implementation scheme: the raw materials for plate production are placed in the screening box 2 from a direction away from the discharge port of the screening box 2, and the inclined screening box 2 and the vibration motor 701 are operated to make the raw materials for plate production move along the screening box 2 toward the discharge port thereof for vibration screening, and the raw materials for plate production are screened through the screening net 5, and the large particles of raw materials are retained in the screening box 2 and discharged and collected from the discharge port, and the small particles of raw materials pass through the screening net 5 and fall onto the discharge plate 4 for discharge and collection, which is used for the screening of raw materials for plate production;

[0045] When the mesh body of the screening net 5 with different mesh sizes is adjusted and replaced, the driving shaft 603 is driven to rotate by rotating the rotating wheel 6032 to realize the rotation operation of the winding roller 601, and the winding roller 601 in one group of the winding adjustment mechanism 6 is used to wind up the screening net 5, and the winding roller 601 in the other group of the winding adjustment mechanism 6 is used to unwind the screening net 5, so as to adjust the position of the screening net 5 and replace the mesh body of the screening net 5;

[0046] When the screening net 5 is adjusted, the first reset member 803 pushes the movable plate 801 and the pressing plate 804 to be lifted, so that the pressing plate 804 is stored in the upper receiving groove 204, and the movable plate 801 moves to the top of the lower receiving groove 203. The roller 802 on the movable plate 801 partially passes through the through hole and is placed in the first through groove 201 and the second through groove 202. The roller 802 contacts the screening net 5, thereby reducing the friction when the screening net 5 is adjusted, which helps to better move and adjust the screening net 5.

[0047] After the adjustment of the screening net 5 is completed, the driving shaft 603 is moved in the direction close to the winding roller 601, so that the positioning round block 6033 is inserted into the positioning groove 6013, and the positioning round block 6033 is inserted into the positioning groove 6013 by the positioning block in the positioning groove 6013, so that the driving shaft 603 is radially locked, and then the adjusting bolt 6042 is rotated to adjust the relative position of the adjusting bolt 6042 on the fixing ring 6041, so that one end of the adjusting bolt 6042 is blocked outside the positioning round block 6033 to prevent the positioning round block 6033 from being separated from the positioning groove 6013, and the driving shaft 603 is radially limited to achieve the locking effect of the driving shaft 603;

[0048] When the drive shaft 603 is locked, the drive shaft 603 moves laterally along the winding roller 601. One end of the drive shaft 603 contacts the connecting plate 904 and pushes the connecting plate 904 to move towards the L-shaped connecting rod 901, causing the adjusting block 905 to gradually penetrate into the adjusting groove 9011 of the L-shaped connecting rod 901. Due to the inclined surfaces provided at the inner bottom of the adjusting block 905 and the adjusting groove 9011 for sliding cooperation, the L-shaped connecting rod 901 is driven to move downward. The L-shaped connecting rod 901 drives the pressing plate 804 to move downward, realizing the pressing action of the pressing plate 804. The pressing plate 804 presses and fixes the screening mesh 5 in the first through groove 201 and the second through groove 202, improving the fixing effect of the position of the screening mesh 5 and preventing the screening mesh 5 from shifting during the screening process. Under the action of the linkage assembly 9, the winding adjustment mechanism 6 and the mesh pressing assembly 8 are linked and controlled, greatly improving the convenience of operation. The present invention realizes the replacement of the specifications of the screening mesh 5, so as to be applicable to the screening of raw materials for plates of different specifications, and can quickly and conveniently replace the specifications of the screening mesh 5, with convenient operation and high practicality.

[0049] Although the preferred embodiments of the present invention have been described, those skilled in the art can make additional changes and modifications once they learn the basic creative concept. Obviously, those skilled in the art can make various changes and variations to the present invention without departing from the spirit and scope of the present invention. Thus, if these modifications and variations of the present invention fall within the scope of the equivalent technology of the present invention, the present invention also intends to include these modifications and variations.

Claims

1. A screening device for raw materials in sheet production, characterized in that, Including: A screening box, which is inclined and the discharge port faces downward. A material passing groove is opened at the inner bottom end of the screening box. A discharge plate is fixedly connected to the bottom of the screening box and is located below the material passing groove. A fixing frame is also fixedly connected to the bottom of the screening box, and a vibration motor is installed on the fixing frame. A support frame, which is arranged below the screening box. Shock absorbers are fixedly connected between the four peripheries of the bottom of the screening box and the support frame. A screening mesh, which is composed of a plurality of mesh bodies with different specifications of mesh holes. First through grooves communicating with the inside are opened along the length direction at both the front and rear ends of the screening box. A second through groove is opened on one side inside the screening box, and the second through groove communicates with the two first through grooves. Both ends of the screening mesh pass through the first through grooves and the second through groove, and the screening mesh covers the top of the material passing groove in the screening box. A winding and adjusting mechanism, with two groups arranged at the front and rear ends of the screening box respectively. Both ends of the screening mesh are wound on the two winding and adjusting mechanisms respectively, and are used to adjust the positions of the mesh bodies with different specifications of mesh holes of the screening mesh in the material passing groove. A mesh pressing component, which is installed on the screening box and is used to press and fix the screening mesh.

2. The screening device for raw materials in sheet production according to claim 1, characterized in that, The winding and adjusting mechanism includes a winding roller. Both ends of the winding roller are rotatably connected with mounting seats, and the mounting seats are fixedly installed on the outer wall of the screening box. One end of the screening mesh is wound on the winding roller. A roller hole is axially opened at the center of the winding roller, and a driving shaft is slidably installed in the roller hole. Both ends of the driving shaft extend to the outside of the winding roller. One end of the driving shaft is fixedly connected with a rotating wheel, and a locking component is arranged between the driving shaft and the winding roller.

3. The screening device for raw materials in sheet production according to claim 2, characterized in that, A pair of limiting strips are fixedly connected along the axial direction on the inner wall of the roller hole. A pair of limiting grooves for accommodating the limiting strips are axially opened on the outer surface of the driving shaft, and the length of the limiting grooves is greater than the length of the limiting strips.

4. The screening device for raw materials in sheet production according to claim 2, characterized in that, The locking component includes a positioning circular block fixedly sleeved on the driving shaft near the rotating wheel. A positioning groove for accommodating the positioning circular block is opened on the outside of one of the mounting seats. A plurality of clamping grooves are equidistantly opened along the circumferential direction on the outer wall of the positioning circular block, and a plurality of clamping blocks for being aligned and clamped into the clamping grooves are arranged on the inner wall of the positioning groove.

5. The screening device for raw materials in sheet production according to claim 4, characterized in that The locking component further includes a fixing ring arranged outside the positioning groove. The fixing ring is fixedly connected with the mounting seat, and a plurality of adjusting bolts are threadedly connected along the circumferential direction on the fixing ring.

6. The screening device for raw materials for sheet production according to claim 2, characterized in that, The mesh pressing component includes a moving plate and a pressing plate. A lower accommodating groove is opened on the screening box below the first through groove and the second through groove. The moving plate is slidably installed in the lower accommodating groove, and a plurality of first resetting members are fixedly connected between the bottom of the moving plate and the inner bottom end of the lower accommodating groove. An upper accommodating groove is opened on the screening box at the top of the first through groove and the second through groove. The pressing plate is slidably installed in the upper accommodating groove. A plurality of rollers are rotatably connected to the top end of the moving plate, and through holes for the rollers to pass through are opened between the first through groove, the second through groove and the lower accommodating groove.

7. A screening device for raw materials in sheet production according to claim 6, characterized in that, Connecting blocks are fixedly connected at both ends and the middle position between the moving plate and the pressing plate. An avoidance groove for accommodating the connecting blocks and allowing the connecting blocks to move is opened between the lower accommodating groove and the upper accommodating groove. A linkage component is arranged between the pressing plate and the driving shaft.

8. A raw material screening device for sheet production according to claim 7, characterized in that, The linkage assembly includes a pair of L-shaped connecting rods fixedly connected to the pressing plate. Two through grooves communicating with the upper accommodating groove are formed on the outer wall of the screening box, and the through grooves correspond to the positions of the L-shaped connecting rods. One end of the L-shaped connecting rod passes through the through groove and is provided with an adjusting groove.

9. The screening device for raw materials in sheet production according to claim 8, characterized in that, The linkage assembly further includes a pair of guide sleeves fixedly connected to the screening box. A guide rod is slidably connected inside the guide sleeve. One ends of the two guide rods close to the L-shaped connecting rods are fixedly connected together with a connecting plate. A pair of adjusting blocks are fixedly connected to one side of the connecting plate, and the adjusting blocks correspond to the positions of the L-shaped connecting rods. One end of the adjusting block is inserted into the adjusting groove, and a matching sliding inclined surface is provided between the adjusting block and the inner bottom end of the adjusting groove. The other end of the guide rod is connected with a limit nut, and a second resetting member is sleeved outside the guide rod between the limit nut and the guide sleeve.

10. The screening device for raw materials for sheet production according to claim 9, wherein, One end of the driving shaft away from the rotating wheel is in contact with the connecting plate, and a ball is rotatably connected to the end of the driving shaft in contact with the connecting plate.

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