A web lapping apparatus and a control method thereof

Abstract

The application provides a coiled material splicing device and a control method thereof. The coiled material splicing device comprises a first and a second reel, a splicing mechanism, and further comprises a flat pressing mechanism for driving the coiled material to move forward and located in front of the splicing mechanism, and a pressing mechanism located in front of the first and the second reel and behind the splicing mechanism, which clamps the coiled material when the tail of any coiled material is located in the area where the pressing mechanism is directed, and drives the clamped coiled material to move forward from the initial position of the pressing mechanism to a preset position close to the splicing mechanism in the moving direction after clamping the coiled material. When the pressing mechanism moves forward to the preset position, the part of the coiled material in front of the outlet of the splicing mechanism where the clamped part is located forms a concave structure, and the moving speed of the forward movement of the pressing mechanism is greater than the running speed of the coiled material at the flat pressing mechanism.

Description

Technical Field

[0001] This invention relates to an overlapping device and its control method, particularly a roll material overlapping device, which belongs to the field of industrial electrical control applications. Background Technology

[0002] The processing of saw blades consists of multiple steps. To facilitate material transfer between steps, the raw steel strip material for saw blades is typically cut into multiple rolls for transport and processing. Considering processing efficiency and product stability, some steps are performed continuously, such as the laser welding process. In this process, to ensure continuity during laser welding, when the first roll of steel strip is almost finished welding, its tail end needs to be quickly connected to the head end of the second roll. This connection can be achieved through welding or lap splicing.

[0003] The current method of connection is a snap-on connection, such as... Figure 1 This is a schematic diagram of the overlapping device in existing technology CN207170741U. (See diagram for example.) Figure 1 As shown, in this prior art, when two steel strips are overlapped by stamping, the clamping mechanism clamps the head of one steel strip and the tail of the other. To ensure the two steel strips remain relatively stationary, the upper and lower dies of the overlapping structure are also pulled by the steel strips. After stamping is completed, the clamping cylinder releases, and the die assembly of the overlapping mechanism retracts to its original position, awaiting the next cycle.

[0004] In this prior art, the overlapping mechanism with the upper and lower punches needs to move forward a long distance with the steel strips during the overlapping process of the two steel strips, that is, at least the product of the running speed of the steel strips and the time required for overlapping, which is generally more than 20cm. When traveling such a distance, the stability of the overlapping mechanism cannot be guaranteed, and it is easy to tip over during the forward movement, leading to safety accidents. Summary of the Invention

[0005] The problem this invention aims to solve is that existing steel strip overlapping devices require the overlapping mechanism and the steel strip to move forward a long distance together during overlapping, which makes it difficult to guarantee the stability of the overlapping mechanism's movement and easily leads to tipping over during forward movement, resulting in safety accidents. The invention provides a roll material overlapping device.

[0006] To solve the above-mentioned technical problems, the technical solution adopted by the present invention is: a roll material overlapping device, comprising: The first reel is used for winding the first roll of material; The second reel is used for winding the second roll of material; An overlapping mechanism is used to overlap the first roll of material with the second roll of material to secure them together. The overlapping mechanism forms a first roll travel channel with the first reel for the passage of the first roll; the overlapping mechanism forms a second roll travel channel with the second reel for the passage of the second roll; the first roll travel channel is located above the second roll travel channel; The roll material guiding mechanism is located in front of the overlapping mechanism in the direction of roll material travel, and is used to drive the roll material exiting the overlapping mechanism forward; The roll splicing device is characterized in that it further includes: The pressing mechanism is located in front of the first and second reels and behind the overlapping mechanism in the direction of roll travel. It is used to clamp the roll when the tail of either the first or second roll is in the area facing the pressing mechanism. After clamping the roll, it is used to move the clamped roll forward in the direction of travel from the initial position of the pressing mechanism to a preset position close to the overlapping mechanism. It is also used to release the roll when it has been in the preset position for at least a preset overlapping time. The average speed of the pressing mechanism from the initial position to the preset position is greater than the speed of the roll running at the roll guiding mechanism, so that when the pressing mechanism moves forward to the preset position, the part of the roll to which the clamped part belongs forms a recessed structure in front of the lap mechanism outlet. The roll material located between the overlapping mechanism and the flat pressing mechanism is in an unsupported state.

[0007] Based on the same inventive concept, the present invention also provides a control method for a roll material overlapping device, characterized in that it includes: Step A: Determine if the tail of the roll material is located in the area facing the pressing mechanism. If so, the pressing mechanism clamps the roll material and, after clamping the roll material, moves it forward in the direction of travel from the initial position of the pressing mechanism to a preset position close to the overlapping mechanism. When the pressing mechanism moves forward to the preset position, the portion of the clamped roll material located at the exit of the overlapping mechanism forms a recessed structure. Step B: Use the overlapping mechanism to overlap the first roll and the second roll to fix them together.

[0008] The advantages and positive effects of this invention are: 1. In this invention, because the average movement speed of the pressing mechanism is greater than the running speed of the roll at the roll guiding mechanism, the roll moves forward at a faster speed, causing the portion of the roll to which the clamped part belongs to form a concave structure in front of the lap mechanism exit. The roll guiding mechanism drives the roll forward, causing the concave structure to gradually become straight. During this process, the roll behind the concave structure can be in a near-static state. Through the above settings, the clamped roll can overlap with another newly added, stationary roll in a basically relatively static state within a certain time. At least within this time, the lap mechanism does not need to move forward, ensuring a better lap effect.

[0009] 2. With the above-mentioned design, the present invention can complete the overlap without moving the overlap mechanism forward, thereby significantly reducing the risk of tipping over when the overlap mechanism moves and ensuring equipment safety. Attached Figure Description

[0010] To more clearly illustrate the technical solutions in the embodiments of this application, the accompanying drawings used in the description of the embodiments will be briefly introduced below. Obviously, the accompanying drawings described below are only some embodiments of this application. For those skilled in the art, other drawings can be obtained based on these drawings without creative effort.

[0011] Figure 1 This is a side view of the overall structure of a steel strip splicing device using existing technology; Figure 2 This is a side view of the overall structure of the roll material overlapping device according to an embodiment of the present invention; Figure 3 It's looking in the direction the roll is traveling. Figure 2 Schematic diagram of the intermediate pressure material mechanism; Figure 4 This is the view from the entrance of the overlapping structure. Figure 2 A three-dimensional structural diagram of the overlapping structure; Figure 5 This is the view from the exit of the overlapping structure. Figure 2 A three-dimensional structural diagram of the overlapping structure; Figure 6 yes Figure 4 A three-dimensional structural diagram of the overlapping structure after being cut open, wherein the cross-section is parallel to the direction of roll material travel and parallel to the height direction; Figure 7 yes Figure 4 A three-dimensional structural diagram including a first stamping part, a first stamping part drive, a second stamping part, and a second stamping part drive; Figure 8 yes Figure 4Exploded structural diagram of the first stamping part, the first stamping part drive part, the second stamping part, the second stamping part drive part, the positioning part, and the limiting part; Figure 9 for Figure 4 A partial cross-sectional view of the first limiting protrusion and the first limiting groove of the positioning component at different heights, wherein the first limiting protrusion is in the state of retracting into the first receiving groove, and the cross-section is parallel to the height direction and parallel to the width direction. Figure 10 for Figure 4 A partial cross-sectional view of the first limiting protrusion of the positioning component and one of the first limiting grooves of the positioning component cooperating with each other, wherein the first limiting protrusion is in the state of extending out of the first receiving groove, and the cross-section is parallel to the height direction and parallel to the width direction. Figure 11 yes Figure 6 A longitudinal cross-sectional view of a portion of the structure when the positioning element is in the first limiting position, wherein the cross-section is parallel to the roll material travel direction and parallel to the height direction; Figure 12 yes Figure 6 A longitudinal cross-sectional view of a portion of the structure when the positioning element is in the second limiting position, wherein the cross-section is parallel to the roll material travel direction and parallel to the height direction; Figure 13 This is a side cross-sectional view of the recessed structure formed by the second roll material when it is clamped to a preset position according to an embodiment of the present invention. Figure 14 This is a side cross-sectional view of the recessed structure formed by the first roll of material when it is clamped to a preset position according to an embodiment of the present invention. Figure 15 This is a schematic diagram of the C-shaped plate as viewed along the roll travel direction according to an embodiment of the present invention; Figure 16 This is a circuit connection diagram of the control device and various sensors, pressing mechanism, overlapping mechanism and roll material blocking structure in an embodiment of the present invention. In the above attached figures: 1. First roll material; 2. Second roll material; 1A. First roll material travel channel; 2A. Second roll material travel channel; 3. Pressing mechanism; 31. First pressing component; 31A. First pressing component drive component; 32. Second pressing component; 32A. Second pressing component drive component; 33. Spacer; 34. Mounting base; 35. Mounting base drive component; 4. Overlapping mechanism; 40. Support base; 41. First stamping component; 41A. First stamping component drive component; 42. Second stamping component; 42A. Second stamping component drive component; 43. Positioning component; 441. First guide wheel; 44 2. Second guide wheel; 451. First mounting component; 452. Second mounting component; 453. Third mounting component; 454. Fourth mounting component; 46. Limiting component; 401. First channel; 402. Second channel; 403. Third channel; 402A. Top end of second channel; 402B. Bottom end of second channel; 5. Flat pressing mechanism; 51. First roller; 52. Second roller; 61. First reel; 62. Second reel; 71. First guide component; 72. Second guide component; 73. Third guide component; 74. Fourth guide component; 8. Roll material blocking mechanism; 100. Control device; 101. First dimension detection sensor; 102. Second dimension detection sensor; 201. First roll material detection sensor; 202. Second roll material detection sensor; 203. Third roll material detection sensor; 204. Overlap mechanism detection sensor; LL, roll material travel direction; LW, width direction; LH, height direction. Detailed Implementation

[0012] The technical solutions in 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 in this application, all other embodiments obtained by those of ordinary skill in the art without creative effort are within the scope of protection of this application.

[0013] like Figure 2 As shown, this embodiment provides a roll material overlapping device, including: The first reel 61 is used for winding the first roll 1; The second reel 62 is used for winding the second roll 2; The overlapping mechanism 4 is used to overlap the first roll 1 and the second roll 2 to fix them together. The overlapping mechanism 4 and the first reel 61 form a first roll travel channel 1A for the passage of the first roll 1; the overlapping mechanism 4 and the second reel 62 form a second roll travel channel 2A for the passage of the second roll 2; the first roll travel channel 1A is located above the second roll travel channel 2A; The roll material guiding mechanism is located in front of the overlapping mechanism 4 in the roll material traveling direction LL, and is used to drive the roll material exiting the overlapping mechanism 4 forward; The roll material overlapping equipment also includes: The pressing mechanism 3 is located in front of the first reel 61 and the second reel 62 in the roll travel direction LL, and behind the overlapping mechanism 4. It is used to clamp the roll when the tail of either the first roll 1 or the second roll 2 is in the area facing the pressing mechanism 3. After clamping the roll, it is used to drive the clamped roll forward in the travel direction from the initial position of the pressing mechanism 3 to a preset position close to the overlapping mechanism 4. The average speed of the pressing mechanism 3 from the initial position to the preset position is greater than the speed of the roll running at the roll guiding mechanism, so that when the pressing mechanism 3 moves forward to the preset position, the part of the roll to which the clamped part belongs, located in front of the outlet of the overlapping mechanism 4, forms a recessed structure.

[0014] According to the above technical solution, when the tail of one of the rolls is located in the area facing the pressing mechanism, the pressing mechanism clamps the roll and drives it forward to a preset position close to the overlapping mechanism. Since the average speed of the pressing mechanism is greater than the speed of the roll at the roll guide mechanism, the roll moves forward at a faster speed, causing a concave structure to form on the portion of the roll to which the clamped part belongs, located in front of the overlapping mechanism's exit. The roll guide mechanism drives the roll forward, causing the concave structure to gradually become straight. During this process, the roll behind the concave structure can be in a near-static state. Through this arrangement, the clamped roll can overlap with another newly added, stationary roll in a relatively static state within a specified time, and at least during this time, the overlapping mechanism does not need to move forward, ensuring a good overlapping effect. This arrangement allows overlapping to be completed without the overlapping mechanism moving forward, significantly reducing the risk of tipping over during the overlapping mechanism's movement and ensuring equipment safety.

[0015] In this invention, the rear side is the side where the material is received, which is the upstream side; the front side is the side where the roll material is sent out, which is the downstream side.

[0016] In this embodiment, the roll material can be steel strip. The roll material guiding mechanism (not shown in the figure) is located downstream of the flattening mechanism 5. The roll material guiding mechanism can be a roll material pulling mechanism, which is existing technology. Only one roll material travels forward from the exit of the overlapping mechanism. For example, when the first roll material is the roll material currently being driven forward by the roll material guiding mechanism, the second roll material is the roll material to be overlapped; when the second roll material is the roll material currently being driven forward by the roll material guiding mechanism, the first roll material is the roll material to be overlapped.

[0017] In the above technical solution, the roll material overlapping equipment also includes a flat pressing mechanism 5 located in front of the overlapping mechanism 4 and behind the roll material guiding mechanism; The flattening mechanism 5 includes a first roller 51 for supporting the roll material, and a second roller 52 located above the roll material and adjustable in the height direction LH. The roll material located between the overlapping mechanism 4 and the first roller 51 is in an unsupported state, and the recessed structure is formed between the overlapping mechanism 4 and the first roller 51.

[0018] The flat pressing mechanism 5 is used to flat press the roll material, thereby ensuring reliable clamping of the tail of the first roll material and the head of the second roll material after overlapping.

[0019] The roll material located between the overlapping mechanism 4 and the flat pressing mechanism 5 is in an unsupported state.

[0020] With the above setup, the roll material between the flat pressing mechanism and the overlapping mechanism is not supported, thus forming a recessed structure.

[0021] In the above technical solution, the pressing mechanism 3 includes a mounting base 34, a mounting base driving member 35 for driving the mounting base 34 to move in the roll travel direction LL, a spacer 33 fixed to the mounting base 34, a first pressing member 31 and a second pressing member 32 for moving along the mounting base 34 in the height direction LH; the first pressing member driving member 31A for driving the first pressing member 31 to move in the height direction LH and the second pressing member driving member 32A for driving the second pressing member 32 to move in the height direction LH are both fixed to the mounting base 34; The first pressing member 31, the spacer 33, and the second pressing member 32 are arranged sequentially from top to bottom in the height direction LH; the first pressing member 31 and the spacer 33 form a first roll material travel channel 1A; the spacer 33 and the second pressing member 32 form a second roll material travel channel 2A; When the tail of the first roll 1 is located in the area facing the first pressing member 31, the first pressing member 31 is used to move towards the first roll 1 in the height direction LH, so that the tail of the first roll 1 is clamped between the first pressing member 31 and the spacer 33; when the first roll 1 is clamped between the first pressing member 31 and the spacer 33, the distance between the second pressing member 32 and the spacer 33 in the height direction LH is greater than the thickness of the roll in the second roll travel channel 2A; When the tail of the second roll 2 is located in the area facing the second pressing member 32, the second pressing member 32 is used to move towards the second roll 2 in the height direction LH, so that the tail of the second roll 2 is clamped between the second pressing member 32 and the spacer 33; when the second roll 2 is clamped between the second pressing member 32 and the spacer 33, the distance between the first pressing member 31 and the spacer 33 in the height direction LH is greater than the thickness of the roll in the first roll travel channel 1A.

[0022] With the above configuration, both the first pressing member 31 and the second pressing member 32 can move relative to each other along the mounting base in the height direction LH. When it is necessary to clamp the first roll, the first pressing member and the spacer can be used to clamp the tail of the first roll, and by driving the mounting base to move in the roll travel direction LL, the tail of the first roll is moved forward. When it is necessary to clamp the second roll, the second pressing member and the spacer can be used to clamp the tail of the second roll, and by driving the mounting base to move in the roll travel direction LL, the tail of the second roll is moved forward. The pressing mechanism 3 is also used to move backward to return to the initial position after releasing the roll. Figure 3 As shown, the first pressing member 31 and the second pressing member 32 can be driven by the first pressing member drive member 31A and the second pressing member drive member 32A, respectively. The pressing member drive member can be a cylinder, and the mounting base drive member 35 can also be a cylinder. To ensure stable operation, the mounting base 34 can be mounted on a corresponding fixed base via a guide rail, not shown in the figure. When the first roll is clamped, the distance between the second pressing member 32 and the spacer 33 ensures that the second roll is not clamped, that is, the pressing mechanism only clamps the first roll and moves it forward without interfering with the second roll; when the second roll is clamped, the distance between the first pressing member 31 and the spacer 33 ensures that the first roll is not clamped, that is, the pressing mechanism only clamps the second roll and moves it forward without interfering with the first roll.

[0023] In the above technical solution, the overlapping mechanism 4 forms a channel structure, which includes a first channel 401, a second channel 402, and a third channel 403 formed sequentially from top to bottom in the height direction LH; the outlet of the second channel 402 forms the outlet of the overlapping mechanism 4. A stamping structure is provided behind the channel structure (i.e., on the upstream side), and the stamping structure includes a first stamping part 41 and a second stamping part 42 located below the first stamping part 41. When the second roll 2 is located in the second channel 402, the first channel 401 is used to extend into the newly added first roll 1, and the first stamping part 41 is used to drive the part of the first roll 1 located behind the first channel 401 to move downward in the height direction LH, so that the first roll 1 and the second roll 2 overlap each other. When the first roll 1 is located in the second channel 402, the third channel 403 is used to extend into the newly added second roll 2; the second stamping part 42 is used to drive the part of the second roll 2 located behind the third channel 403 to move upward in the height direction LH, so that the second roll 2 and the first roll 1 overlap each other.

[0024] When the first roll is a newly added roll and the second roll is the currently moving roll (i.e., the head of the first roll needs to overlap the tail of the second roll), the first roll extends into the first channel, and the second roll extends into the second channel. When the first roll is the currently moving roll and the second roll is a newly added roll (i.e., the tail of the first roll needs to overlap the head of the second roll), the second roll extends into the third channel, and the first roll extends into the second channel. Since the first roll is always above the second roll, by setting up the first, second, and third channels—meaning that the currently moving roll always enters the second channel, the first channel can receive newly added first rolls, or the third channel can receive newly added second rolls—this facilitates continuous operation.

[0025] The height relationship of each channel can also be different from that shown in the attached diagram. For example, the first channel, the second channel, and the third channel can be set to have the same height, or other height relationships can be set as needed.

[0026] The overlapping mechanism 4 includes a support base 40 and a mounting housing fixedly connected to the support base 40; the channel structure is formed in the mounting housing. In the height direction LH, a positioning element 43 is provided between the first stamping part 41 and the second stamping part 42; a first limiting position and a second limiting position of the positioning element 43 are formed in the mounting housing; When the positioning element 43 is in the first limiting position, the top end of the positioning element 43 and the bottom end of the first channel 401 are at the same height, and the bottom end of the positioning element 43 and the top end of the second channel 402 are at the same height. When the positioning element 43 is in the second limiting position, the top of the positioning element 43 and the bottom of the second channel 402 are at the same height, and the bottom of the positioning element 43 and the top of the third channel 403 are at the same height.

[0027] The first stamping part 41 is used to drive the positioning part 43 from the first limiting position to the second limiting position; the second stamping part 42 is used to drive the positioning part 43 from the second limiting position to the first limiting position.

[0028] The positioning element 43, located at the limit position, provides a limit for the roll material.

[0029] When the current roll of material is the first roll 1 and the next roll of material is the second roll 2, the first roll 1 is located in the second channel 402, and the newly added second roll 2 extends into the third channel 403. The positioning member 43 is located in the second limit position, that is, the second roll 2 is located between the upper positioning member 43 and the lower second stamping member 42. The second stamping member 42 moves upward, thereby driving the second roll 2 outside the entrance of the third channel 403 to move upward. After the second stamping member 42 abuts against the upper positioning member 43 through the second roll 2, it drives the positioning member 43 to move upward and clamps the second roll 2 together with the positioning member 43. The upwardly moving positioning member 43 pushes the corresponding part of the first roll 1 located outside the entrance of the second channel 402 upward. When the positioning member 43 reaches the first limit position, the part of the second roll 2 pushed by the second stamping member 42 overlaps with the first roll 1. At this time, the waste portion of the first roll 1 is located outside the entrance of the first channel 401, and the waste portion of the second roll 2 is located in the third channel 403, which can be removed for cleaning.

[0030] When the current roll of material is the second roll 2 and the next roll of material is the first roll 1, that is, the second roll 2 is located in the second channel 402, the newly added first roll 1 extends into the first channel 401, and the positioning member 43 is located in the first limit position, that is, the first roll 1 is located between the upper first stamping member 41 and the lower positioning member 43; the first stamping member 41 moves downward, thereby driving the first roll 1 outside the entrance of the first channel 401 to move downward. After the first stamping member 41 abuts against the lower positioning member 43 through the first roll 1, it drives the positioning member 43 to move downward and clamps the first roll 2 together with the positioning member 43; the downward moving positioning member 43 pushes the corresponding part of the second roll 2 located outside the entrance of the second channel 402 downward; when the positioning member 43 reaches the second limit position, the part of the first roll 2 that is abutted downward by the first stamping member 41 overlaps with the second roll 1. At this time, the waste portion of the second roll 2 is located outside the entrance of the third channel 403, and the waste portion of the first roll 1 is located in the first channel 401, which can be removed for cleaning.

[0031] When the positioning member 43 is in the first limiting position and before the newly added first roll 1 extends into the first channel 401, the height difference between the bottom end of the first stamping member 41 and the top end of the positioning member 43 in the height direction LH is greater than the thickness of the roll, so as not to affect the extension of the first roll 1.

[0032] When the positioning member 43 is in the second limit position, and before the newly added second roll 2 extends into the third channel 403, the height difference between the top of the second stamping member 42 and the bottom of the positioning member 43 in the height direction LH is greater than the thickness of the roll, so as not to affect the extension of the second roll 2.

[0033] Preferably, the positioning member 43 has a first positioning member segment and a second positioning member segment arranged adjacent to each other; the second positioning member segment is located upstream of the first positioning member segment; the width of the first positioning member segment is greater than the width of the second positioning member segment, and the widths of both the first and second positioning member segments are less than the width of the roll material. With this arrangement, under the action of the stamping component, a T-shaped structure can be stamped onto the subsequent roll material by the positioning member 43, and the positioning member 43 pushes out the corresponding portion of the previous roll material, causing the T-shaped structure of the subsequent roll material to extend into the corresponding T-shaped groove of the previous roll material, thereby enabling the two roll materials to reliably overlap. For details, please refer to the prior art CN207170741U.

[0034] The mounting housing is fixedly connected to two limiting members 46, which are located on both sides of the positioning member 43 in the width direction LW. Each limiting member 46 has two limiting structures spaced at intervals along the height direction LH on the side facing the positioning member 43, and the side of the positioning member 43 facing each limiting member 46 has a limiting engagement structure that cooperates with the limiting structure. The upper limiting structure of the two limiting members 46 forms the first limiting position, and the lower limiting structure of the two limiting members 46 forms the second limiting position. In a preferred embodiment, the limiting structure and the limiting mating structure correspond to a limiting protrusion and a limiting groove, respectively. A receiving groove corresponding to the limiting structure is formed in the limiting member 46. The limiting protrusion extends into the corresponding receiving groove. An elastic structure for abutting the limiting protrusion outward is provided between the bottom of the receiving groove and the limiting protrusion. When the limiting protrusion is not facing the limiting groove, the positioning member 43 abuts against the limiting protrusion, causing the limiting protrusion to retract into the receiving groove. When the limiting protrusion faces the limiting groove, the limiting protrusion extends out of the receiving groove and into the corresponding limiting groove, so that the positioning member 43 is limited to the corresponding limiting position. In another preferred embodiment, such as Figure 9 , Figure 10As shown, when the limiting structure and the limiting mating structure correspond to the first limiting groove 491 (opened on the wall of the limiting member 46) and the first limiting protrusion 492 respectively, the first receiving groove 493 corresponding to the first limiting protrusion 492 is opened on the positioning member 43. The first limiting protrusion 492 extends into the corresponding first receiving groove 493. A first elastic structure 494 for abutting the first limiting protrusion 492 outward is provided between the bottom of the first receiving groove 493 and the first limiting protrusion 492. The dimension LW of the first limiting protrusion 492 in the width direction is larger than the dimension LW of the first limiting groove 491 in the width direction. More preferably, the first limiting protrusion 492 is a spherical structure, and the first limiting groove 491 is an arc-shaped groove that mates with the spherical structure. The outer diameter of the arc-shaped groove can be larger than the outer diameter of the spherical structure.

[0035] (1) When the limiting protrusion is not facing the limiting groove, the limiting member 46 abuts against the limiting protrusion, causing the limiting protrusion to retract into the receiving groove; (2) When the limiting protrusion faces the limiting groove, the limiting protrusion extends out of the receiving groove and enters the corresponding limiting groove, so that the positioning member 43 is limited to the corresponding limiting position.

[0036] When the limiting protrusion and the corresponding limiting groove are engaged in the corresponding limiting position, if any stamping part drives the positioning part 43 to move, the limiting protrusion can leave the corresponding limiting groove, and the limiting protrusion can retract into the corresponding receiving groove when it is abutted, without affecting the movement of the positioning part 43 in the height direction.

[0037] Since the two limiting positions of the positioning member are fixed, the travel distance of the first stamping member and the second stamping member can be set. When the positioning member reaches the corresponding limiting position, the first / second stamping member stops moving downward / upward, allowing the limiting protrusion to extend into the corresponding limiting groove, thus keeping the positioning member 43 in the corresponding limiting position. When the positioning member needs to move from one limiting position to another, the corresponding stamping member abuts against the positioning member, driving the positioning member to move, and the limiting protrusion is abutted and retracts into the corresponding limiting groove.

[0038] Preferably, the dimension of the limiting protrusion in the width direction LW is larger than the dimension of the limiting groove in the width direction LW, so that when the positioning member 43 is abutted by the stamping member in the height direction, the limiting protrusion can leave the limiting groove; preferably, the limiting protrusion is a spherical structure, and the limiting groove is an arc-shaped groove that cooperates with the spherical structure, so as to facilitate the limiting protrusion entering the limiting groove or leaving the limiting groove.

[0039] Figure 9The diagram shows the first limiting groove 491 and the first limiting protrusion 492 at different heights. At this time, the wall of the limiting member 46 abuts against the first limiting protrusion 492, causing the first limiting protrusion 492 to retract into the first receiving groove 493 and prevent it from extending. Simultaneously, the first elastic structure 494 is compressed. (As shown...) Figure 10 The diagram shows the first limiting groove 491 and the first limiting protrusion 492 at the same height. At this time, under the elastic action of the first elastic structure 494, the first limiting protrusion 492 extends into the first limiting groove 491, thereby limiting the positioning member 43 at that position. When the position of the positioning member 43 needs to be adjusted, it can be abutted by a stamping part. At this time, the wall surface of the limiting member 46 presses against the first limiting member protrusion 492, causing the first limiting member protrusion 492 to gradually retract into the first receiving groove 493, thus allowing the positioning member 43 to move in the height direction without being obstructed by the first limiting protrusion 492.

[0040] The lower limit position of the downward movement of the first stamping part 41 can be set to the height of the bottom of the second channel 402 plus the thickness of the roll (i.e., the roll height), and the upper limit position of the upward movement of the second stamping part 42 can be set to the height of the top of the second channel 402 minus the thickness of the roll (i.e., the roll height).

[0041] Each stamped part may have a corresponding stamped part guide protrusion. For example, the second stamped part 42 may have a second stamped part guide protrusion 420, and the positioning part 43 may have a corresponding positioning part guide protrusion 430. The projections of the stamped part guide protrusion and the positioning part guide protrusion 430 on the projection plane perpendicular to the height direction coincide with each other. Through the cooperation of the guide protrusion with the guide grooves correspondingly provided on the third mounting part 453 and the third mounting part 454, the movement of the stamped part and the positioning part in the height direction is guided. The projections of the first stamped part, the second stamped part, and the positioning part 43 on the projection plane perpendicular to the height direction coincide with each other.

[0042] like Figure 4 , Figure 5 , Figure 6 As shown, the overlapping mechanism 4 includes a support base 40, a first stamping part 41, and a second stamping part 42. Two hydraulic cylinders push the mold to quickly connect two steel strips together using a stamping and riveting method. A coil blocking mechanism 8 (which can be a cylinder) is also provided for back-and-forth movement. The coil blocking mechanism 8 can be moved to a position at a preset distance from the exit of the overlapping mechanism 4, ensuring that the steel strip passing through the overlapping mechanism 4 is of the same length each time.

[0043] like Figure 11As shown, when it is necessary to overlap the first roll 1 newly added to the first channel with the second roll 2 currently traveling in the second channel, the first stamping part is initially located at an initial position not lower than the top of the first channel 401. The first stamping part moves downward, causing the positioning part 43 to move from the first limit position to the second limit position. This allows the first roll (i.e., the part of the first roll after the entrance of the first channel) located at the height of the first channel to be stamped to the height of the second channel, replacing the second roll originally located after the entrance of the second channel, thereby achieving the overlap between the head of the first roll and the tail of the second roll. In this case, the first roll in the first channel and the second roll pushed to the outside of the entrance of the third channel are both discarded materials.

[0044] like Figure 12 As shown, when it is necessary to overlap the second roll of material newly added to the third channel with the first roll of material currently traveling in the second channel, the second stamping part is initially located at an initial position no higher than the bottom end of the third channel 403. The second stamping part moves upward, causing the positioning part 43 to move from the second limit position to the first limit position. This allows the second roll of material located at the height of the third channel (i.e., the part of the second roll of material after the entrance of the third channel) to be stamped to the height of the second channel, replacing the first roll of material originally located after the entrance of the second channel, thereby achieving the overlap between the head of the second roll of material and the tail of the first roll of material. In this case, the first roll of material pushed to the outside of the entrance of the first channel and the second roll of material in the third channel are both discarded materials.

[0045] The positioning element 43 can be limited by the cooperation between the limiting element 46 and the positioning element 43.

[0046] like Figure 7 As shown, the positioning component 43 is not in any of the limit positions, but is in a state of being adjusted from one limit position to another. Figure 8 The specific structure of positioning component 43 and limiting component 46 is shown.

[0047] like Figures 4-8As shown, the first stamping part 41 can be driven by the first stamping part drive 41A to move up and down, and the second stamping part 42 can be driven by the second stamping part drive 42A to move up and down. A first guide wheel 441 and a second guide wheel 442 can be respectively provided above and below the second channel 402 to limit and guide the roll material in the second channel 402. The first channel 401 can be formed between the first mounting part 451 and the third mounting part 453, the second channel 402 can be formed between the third mounting part 453 and the fourth mounting part 454, and the third channel 403 can be formed between the fourth mounting part 454 and the second mounting part 452. Two limiting members 46 are fixed to both sides of the positioning member 43 in the width direction, thereby limiting the positioning member 43. The first mounting part 451, the second mounting part 452, the third mounting part 453, the fourth mounting part 454, and the limiting members 46 are all fixedly connected to each other and fixed to the support base 40. The mounting housing includes a first mounting member 451, a second mounting member 452, a limiting member 46, and a mounting member located in front of the stamping member, all fixedly connected to each other. The projections of the roll material travel direction and the length direction of the overlapping mechanism 4 onto a plane perpendicular to the height direction are parallel or coincident. Any two of the length, width, and height directions are perpendicular to each other.

[0048] like Figure 2 As shown, an overlap mechanism detection sensor 204 can also be installed on one side in front of the overlap mechanism 4 to detect whether the overlap mechanism is sliding. A third roll material detection sensor 203 can also be installed on one side of the roll material channel between the overlap mechanism 4 and the flat pressing mechanism 5 to detect whether there is roll material in the roll material channel. If the detection result is no roll material, the overlap equipment can be stopped.

[0049] Combination Figure 11 , Figure 13 The first channel 401 is used to allow the newly added first roll 1 to pass through. The roll blocking mechanism 8 in front of the first channel 401 is used to block the front end of the newly added first roll 1. During the overlap, the upper first stamping part 41 passes through the first roll 1 before the entrance of the first channel 401 and abuts against the positioning part 43, so that the positioning part 43 moves from the first limit position to the second limit position, so that the newly added first roll 1 replaces the second roll 2 originally located after the entrance of the second channel 402, thereby overlapping the tail of the second roll 2 with the head of the first roll 1.

[0050] Combination Figure 12 , Figure 14The third channel 403 is used to allow the newly added second roll 2 to pass through. The roll blocking mechanism 8 in front of the third channel 403 is used to block the front end of the newly added second roll 2. During the overlap, the lower second stamping part 42 passes through the second roll 2 before the entrance of the third channel 403 and abuts against the positioning part 43, so that the positioning part 43 moves from the second limit position to the first limit position, so that the newly added second roll 2 replaces the first roll 1 originally located after the entrance of the second channel 402, thereby overlapping the tail of the first roll 1 with the head of the second roll 2.

[0051] When the second pressing member 32 and the spacer 33 clamp the second roll 2 to a preset position, the second roll 2 forms a recessed structure in front of the overlapping mechanism, such as Figure 13 As shown. For the sake of simplicity, Figure 13 , Figure 14 The first, second, and third channels in the channel structure are omitted in the original text.

[0052] When the first pressing member 31 and the spacer 33 clamp the first roll 1 to a preset position, the first roll 1 forms a recessed structure in front of the overlapping mechanism, such as Figure 14 As shown.

[0053] The roll material blocking mechanism 8 only allows the roll material extending from the second channel 402 to pass through. That is, after the roll material is overlapped, it extends from the second channel 402 and is driven forward by the roll material guiding mechanism.

[0054] In this embodiment, each limiting member 46 is provided with two limiting positions. When the positioning member 43 is fixed to the upper limiting position by cooperation, it is located at the first limiting position. When the positioning member 43 is fixed to the lower limiting position by cooperation, it is located at the second limiting position.

[0055] In the above technical solution, the roll splicing equipment also includes: The roll material blocking mechanism 8 is located in front of the overlapping mechanism 4 in the roll material travel direction LL. It is used to allow the roll material output from the second channel 402 to pass through and to prevent the roll material extending from the first channel 401 and the third channel 403.

[0056] By setting up a roll material blocking mechanism, the forward movement of the roll material in the second channel will not be affected. Since the roll materials in the first and third channels in front of the entrance are discarded, blocking the roll materials extending from the first and third channels can play a limiting role and prevent the roll materials from extending too far and causing waste.

[0057] Preferably, the roll material blocking mechanism 8 is a C-shaped plate; the C-shaped plate is arranged around a channel 8A for the roll material output from the second channel 402 to pass through, thereby allowing the roll material in the second channel 402 to pass through; the surface of the C-shaped plate forms a blocking structure for the roll material in the first channel 401 and the third channel 403. Figure 15 The above is a schematic diagram of the C-shaped plate.

[0058] Preferably, the control device 100 is used to move the roll blocking mechanism 8 to a position with a first preset distance from the overlapping mechanism 4 when the detection results of the first roll detection sensor 201 and the second roll detection sensor 202 are both positive.

[0059] With the above settings, when the detection results of the first roll material detection sensor 201 and the second roll material detection sensor 202 are both positive, it indicates that the two roll materials are ready to be overlapped, that is, the roll material blocking mechanism is used to block the newly added roll material.

[0060] The first preset spacing can be 20cm, but can be set according to actual needs. The roll material detection sensor can be an existing matrix fiber optic sensor.

[0061] In the above technical solution, S1 and (S1 / V1) satisfy the following conditions: (S1 / V0)-(S1 / V1)≥Ta; Wherein, S1 is the distance between the initial position and the preset position; V1 is the average movement speed of the pressing mechanism 3 from the initial position to the preset position; Ta is the preset overlap time required to overlap the first roll 1 and the second roll 2; and V0 is the roll running speed at the flat pressing mechanism 5.

[0062] With the above settings, (S1 / V0)-(S1 / V1) represents the time saved by the rapid forward movement of the pressing mechanism, allowing a recessed structure to be formed in front of the overlapping mechanism's exit point for the currently running roll. During this saved time, the portion of the currently running roll behind the recessed structure is essentially stationary, enabling the overlapping of the two rolls to be achieved within this time. When the pressing mechanism reaches the preset position, the overlapping mechanism can be activated, i.e., the stamping parts begin to move. The preset overlapping time is the time required from the start of the stamping parts' movement (either the first stamping part moves downwards or the second stamping part moves upwards) until the first and second rolls are fully overlapped.

[0063] The distance between the preset position and the entrance of the overlapping mechanism 4 can be 2cm-10cm, preferably 5cm.

[0064] Preferably, the pressing mechanism 3 is used to release the clamped roll when the clamped roll reaches a preset position, or to release the clamped roll when the time the clamped roll is in the preset position reaches p% of the preset overlap time; more preferably, the value of p% is in the range of [5%, 100%].

[0065] After the pressing mechanism 3 reaches the preset position, the time for releasing the clamped roll material is earlier than the time for the overlap to be completed. For example, after reaching the preset position, the clamping can be released when the waiting time reaches p% of the required overlap time. p% can be a value in the range of [10%, 100%], more preferably [20%, 100%], and even more preferably [50%, 100%]. For example, if the preset overlap time is 1 second, the pressing mechanism 3 can release the roll material directly after reaching the preset position, or release the roll material after waiting for no more than 1 second. The waiting time range of 10% to 100% is 0.1s to 1s, and the waiting time range of 50% to 100% is 0.5s to 1s.

[0066] In the above technical solution, the roll splicing equipment further includes: Control device 100; The first size detection sensor 101 is used to detect the size of the first roll 1 wound on the first turntable; The second size detection sensor 102 is used to detect the size of the second roll 2 wound on the second turntable; The output terminals of the first size detection sensor 101 and the second size detection sensor 102 are both electrically connected to the input terminal of the control device 100. The output end of the control device 100 is electrically connected to the power supply control end of the overlapping mechanism 4 to control the on / off of the power supply to the overlapping mechanism 4.

[0067] The study found that if the overlapping mechanism is kept energized for an extended period, it may overheat and affect normal operation. The above-mentioned design allows for the detection of whether the overlapping mechanism can be activated by checking if the size of the roll material wound on the turntable reaches a set value, thus eliminating the need to keep the overlapping mechanism energized for extended periods.

[0068] like Figure 2 As shown, the first size detection sensor 101 can be disposed below the first reel 61, and the second size detection sensor 102 can be disposed below the second reel 62. The size detection sensor can be a laser sensor, and the detection of the size of the roll material on the reel is an existing technology.

[0069] In the above technical solution, the roll splicing equipment also includes a control device 100; A first roll material detection sensor 201 is provided between the first roll 61 and the pressing mechanism 3. The first roll material detection sensor 201 is positioned facing the first roll material travel channel 1A and is used to continuously detect whether there is roll material in the first roll material travel channel 1A. A second roll material detection sensor 202 is provided between the second roll 62 and the pressing mechanism 3. The second roll material detection sensor 202 is positioned facing the second roll material travel channel 2A and is used to continuously detect whether there is roll material in the second roll material travel channel 2A. The output terminals of the first roll material detection sensor 201 and the second roll material detection sensor 202 are both electrically connected to the input terminal of the control device 100. The control terminals of the overlapping mechanism 4 and the pressing mechanism 3 are both electrically connected to the output terminal of the control device 100.

[0070] With the above settings, the timing of the subsequent pressing mechanism and overlapping mechanism can be determined based on the time when the roll material detection sensor detects the absence of the corresponding roll material.

[0071] Preferably, the roll splicing equipment further includes a splicing mechanism detection sensor 204 for detecting whether the splicing mechanism 4 moves back and forth, and the output end of the splicing mechanism detection sensor 204 is electrically connected to the input end of the control device 100.

[0072] With the above settings, when the overlapping mechanism 4 is detected to be moving back and forth, it indicates that the roll material is stuck with the overlapping mechanism, causing a malfunction. Therefore, the equipment can be stopped by the control device.

[0073] Preferably, a third roll material detection sensor 203 is also provided in front of the outlet of the overlapping mechanism 4 for detecting whether there is roll material between the outlet of the overlapping mechanism 4 and the roll material guiding mechanism. The output end of the third roll material detection sensor 203 is electrically connected to the input end of the control device 100.

[0074] With the above settings, when it is detected that there is no roll material between the outlet of the detection overlap mechanism 4 and the roll material guide mechanism, it indicates that the overlap has not been successful, and the equipment can be stopped by the control device.

[0075] It should be noted that the splicing mechanism can also use existing structures, such as butt welding machines or splicing machines. That is, existing equipment is used, which, in order to ensure the continuous operation of the production line without stopping when a roll of steel strip is used up and needs to be replaced, quickly and firmly connects the head of the new steel strip to the tail of the old steel strip.

[0076] Based on the same inventive concept, the present invention also provides a control method for a roll material overlapping device, characterized in that it includes: Step A: Determine if the tail of the roll material is located in the area facing the pressing mechanism 3. If so, the pressing mechanism 3 clamps the roll material and, after clamping the roll material, moves it forward in the direction of travel from the initial position of the pressing mechanism 3 to a preset position close to the overlapping mechanism 4. The average movement speed of the pressing mechanism 3 from the initial position to the preset position is greater than the roll material running speed at the roll material guiding mechanism, so that when the pressing mechanism 3 moves forward to the preset position, the portion of the clamped roll material located at the exit of the overlapping mechanism 4 forms a recessed structure. Step B: Use the overlapping mechanism 4 to overlap the first roll 1 and the second roll 2 to fix them together.

[0077] According to the above technical solution, when the tail of one of the rolls is located in the area facing the pressing mechanism, the pressing mechanism clamps the roll and drives it forward to a preset position close to the overlapping mechanism. Since the average speed of the pressing mechanism is greater than the speed of the roll at the roll guide mechanism, the roll moves forward at a faster speed, causing a concave structure to form on the portion of the roll to which the clamped part belongs, located in front of the overlapping mechanism's exit. The roll guide mechanism drives the roll forward, causing the concave structure to gradually become straight. During this process, the roll behind the concave structure can be in a near-static state. Through this arrangement, the clamped roll can overlap with another newly added, stationary roll in a relatively static state within a specified time, and at least during this time, the overlapping mechanism does not need to move forward, ensuring a good overlapping effect. This arrangement allows overlapping to be completed without the overlapping mechanism moving forward, significantly reducing the risk of tipping over during the overlapping mechanism's movement and ensuring equipment safety.

[0078] In the above technical solution, A first roll material detection sensor 201 is provided between the first roll 61 and the pressing mechanism 3. The first roll material detection sensor 201 is positioned facing the first roll material travel channel 1A and is used to continuously detect whether there is roll material in the first roll material travel channel 1A. A second roll material detection sensor 202 is provided between the second roll 62 and the pressing mechanism 3. The second roll material detection sensor 202 is positioned facing the second roll material travel channel 2A and is used to continuously detect whether there is roll material in the second roll material travel channel 2A. The specific method for determining whether the tail of the roll material is located in the area facing the pressing mechanism 3 is as follows: If any roll material detection sensor fails to detect the corresponding roll material, the time when the tail of the corresponding roll material is located in the area facing the pressure mechanism 3 is determined based on the time when the corresponding roll material is not detected, the distance between the corresponding roll material detection sensor and the pressure mechanism 3 in the roll material travel direction LL, and the roll material travel speed; or The time when the corresponding roll material detection sensor does not detect the corresponding roll material, plus the preset time corresponding to the corresponding roll material, is taken as the time when the tail of the corresponding roll material is located in the area facing the pressing mechanism 3. The first preset time is determined based on the distance between the corresponding roll material detection sensor and the pressing mechanism 3 in the roll material travel direction LL and the roll material travel speed.

[0079] A limiting mechanism for restricting the roll material on both sides can be provided in front of the overlapping mechanism 4. The limiting mechanism can be a roller (with the axis of rotation parallel to the height direction). The roller contacts the edge of the roll material, thereby limiting the direction of travel of the roll material and preventing it from deviating to the sides. The limiting mechanism is preferably located between the overlapping mechanism 4 and the roll material blocking mechanism 8.

[0080] like Figure 2 As shown, a first guide member 71 for limiting and guiding the first roll material can be provided between the first reel 61 and the pressing mechanism 3; a first guide member 71 for limiting and guiding the second roll material 2 can also be provided between the second reel 62 and the pressing mechanism 3. The first guide member 71 can be rollers arranged facing each other on both sides of the first roll material 1. The second guide member 72 can be rollers arranged facing each other on both sides of the second roll material 2. Both the first guide member 71 and the second guide member 72 can be pressure rollers with built-in spring devices, thereby generating pressure on the roll material on both sides to limit the roll material.

[0081] In this embodiment, pressure rollers can be installed above or below the roll material, and at least one of the two pressure rollers is equipped with a spring device. The shaft of the pressure roller extends from both sides of the pressure roller in the axial direction, and a connecting rod extending in the height direction is fixed on the base. When the lower / upper pressure roller is equipped with a spring device, the connecting rod passes through the shaft of the pressure roller upward / downward and is in clearance fit with the shaft. A spring can be sleeved on the outside of the connecting rod between the base and the shaft, and the axial direction of the spring is located in the height direction. Through the upward / downward compression of the shaft by the spring, the pressure roller applies upward / downward pressure to the roll material, thereby achieving the limiting of the roll material. Two springs and corresponding connecting rods can be symmetrically arranged along the length of the shaft to ensure stability.

[0082] like Figure 2 As shown, a third guide member 73 for guiding the first roll material can be provided between the first reel 61 and the pressing mechanism 3; a fourth guide member 74 for guiding the second roll material 2 can be provided between the second reel 62 and the pressing mechanism 3. Both the third guide member 73 and the fourth guide member 74 can be rollers.

[0083] The interval between the action command for clamping the roll material and the action command for moving the roll material forward is such that the roll material is moved forward only after clamping is completed, preferably at least 1 second.

[0084] The control method further includes: detecting the size of the corresponding roll material wound on each turntable; if the size of the corresponding roll material wound on any turntable is not greater than the preset size, then power is supplied to the pressing mechanism 3.

[0085] Preferably, a roll material blocking mechanism 8 is provided in front of the overlapping mechanism 4. The roll material blocking mechanism 8 is used to allow the roll material in the second channel 402 to pass through and to prevent the roll material extending from the first channel 401 and the third channel 403. Preferably, the control method further includes: when the first roll material detection sensor 201 detects the first roll material 1 and the second roll material detection sensor 202 detects the second roll material 2, causing the roll material blocking mechanism 8 to move to a position close to the overlapping mechanism 4.

[0086] The roll travel speed is the speed at which the roll guide mechanism propels the roll forward, and it can be a constant speed. The first reel 61 and the second reel 62 can move along with the roll as it travels, but they do not need to provide power for the roll's movement.

[0087] like Figure 16 As shown, the output terminals of the first size detection sensor 101, the second size detection sensor 102, the first roll material detection sensor 201, the second roll material detection sensor 202, the control terminal of the pressing mechanism 3, the control terminal of the overlapping mechanism 4, and the control terminal of the roll material blocking mechanism 8 are all electrically connected to the control device.

[0088] The following are the advantages of this embodiment compared to the prior art: (1) In the prior art, the steel strip in the steel strip tray needs to be monitored manually at all times. If the material runs out and is not dealt with in time, it will cause the entire production line to stop. Re-threading and reloading the material will result in a waste of about 5% of the coil. To address this technical problem, the present invention uses a sensor to detect the real-time size of the coil loaded on the turntable, and realizes the automatic control of the precise opening of the hydraulic station (the hydraulic device of the overlapping mechanism 4), which reduces the waste of personnel waiting time, improves the overall production efficiency and automation level, and also reduces the losses caused by prolonged operation. It improves the precise control of the strip head and reduces the material overlap loss.

[0089] (2) In the prior art, the hydraulic oil pump of the overlapping mechanism 4 needs to be started manually in advance. If it is started too early, the hydraulic system of the overlapping mechanism 4 is prone to overheating alarm and oil pipe bursting. If it is started too late, the oil pressure is insufficient and the steel strip cannot be successfully overlapped. The present invention uses a size detection sensor to detect whether the roll material has reached the preset size, thereby accurately controlling the opening of the overlapping mechanism 4.

[0090] (3) In the prior art, the beginning and end of each roll of steel strip are severely warped. When passing a proximity sensor that is close to the roll, the sensor will be damaged, and the equipment will be pulled to the ground. By setting a pressure roller with a spring device, the roll can be made flat. Moreover, the sensor of the present invention is a matrix fiber optic sensor, which can be kept at a certain distance from the roll, avoiding the influence of the warped part of the roll.

[0091] (4) In the existing technology, X0 or X1 will activate if the steel strip is not detected. When the steel strip has a large bending range or the line is unstable, the up-and-down movement of the steel strip will be detected by X0 or X1, causing the overlapping mechanism 4 to malfunction. This results in 2%-8% waste of the coiled product and requires a restart for adjustment. In the existing technology, when the equipment vibrates severely or the production line is unstable, the X2-X7 sensors are very prone to failure due to problems such as insufficient sensing distance or loose fixing. This can lead to the next action being performed prematurely or not at all, resulting in overlapping errors. This also results in significant product waste. By setting up a matrix fiber optic sensor, the detection accuracy is improved, avoiding the problem of false detection caused by the up-and-down movement of the steel strip.

[0092] (5) During the steel strip lap splicing process, if the steel strip is not spliced ​​or not spliced ​​properly, the steel strip will run away. This solution sets up a third roll material detection sensor 203 to stop the equipment from working even if the splicing is not successful, thus avoiding further waste.

[0093] (6) In the prior art, if the steel strip gets stuck in the mold groove or if the cylinder, solenoid valve, or mold malfunctions during the steel strip lap splicing process, the steel strip will pull the equipment over, causing a serious safety accident. This solution, by setting a third coil detection sensor 203 and a lap splicing mechanism detection sensor 204, can promptly stop the lap splicing mechanism from working through the control device in case of a malfunction, thereby reducing safety risks.

[0094] (7) For example Figure 1 As shown, in the prior art, when the steel strip of the first roll 1 is almost used up, the end of the steel strip of the second roll 2 needs to be manually passed through the overlapping mechanism 4 so that the tail of the first roll 1 and the head of the second roll 2 can overlap together. However, the size of the end of the second roll 2 passing through the overlapping mechanism 4 cannot be set, which easily leads to a lot of waste during the overlapping process. The present invention, by setting a roll blocking mechanism 8, can control the extension size of the newly added roll and reduce waste.

[0095] In addition, when the head of the roll enters the overlapping mechanism 4, the roll head is very prone to backing back due to gravity, thus detaching from the overlapping mechanism 4. By setting the first guide 71, that is, by setting rollers on both sides of the roll facing each other, the roll is limited, thus preventing the roll from backing back.

[0096] (8) such as Figure 1 As shown, in the prior art, when both strips are simultaneously positioned between the two wheels, scraping occurs, thereby damaging the integrity of the steel strip surface. This invention, through the pressing mechanism 3, divides the material into two coil travel channels with different spacing, reducing scraping between the two steel strips and improving the product yield.

[0097] This invention has been designed, manufactured, and implemented in actual production. Verification has confirmed that the device is easy to use, has high automation efficiency, saves more materials, has better safety performance, and has a lower rate of defective product loss. The method is effective and reliable, and has been promoted for use on all equipment and machines.

[0098] In this embodiment, the control method for the overlapping equipment is as follows: a. First, the material head of the first roll 1 is used to pass through the second channel 402 of the pressing mechanism 3, the overlapping mechanism 4, and the flat pressing mechanism 5 in sequence, and is pulled to the processing station. That is, the first roll 1 is being processed at this time.

[0099] b. When overlapping is required, the head of the second roll 2 is passed through the pressing mechanism 3. At this time, the upper first roll detection sensor 201 and the lower second roll detection sensor 202 respectively sense the corresponding steel strip. The roll blocking mechanism 8 immediately moves to a position close to the outlet of the overlapping mechanism 4. The steel strip of the first roll 1 just passes through the roll blocking mechanism 8 without being blocked by the roll blocking mechanism 8. When the head of the second roll 2 is passed through the overlapping mechanism 4, it will hit the roll blocking mechanism 8, thus preventing the second roll 2 from moving forward.

[0100] c. When the first roll 1 is continuously unwound to the end, the first roll detection sensor 201 detects that the diameter of the steel roll has reached the set value, which can start the hydraulic system of the overlapping mechanism 4.

[0101] d. When the tail of the first roll 1 moves forward to the front of the first roll detection sensor 201, the first roll detection sensor 201 detects the absence of steel strip, and sends a signal after a delay of a few seconds, triggering the first pressing member 31 at the upper end of the pressing mechanism 3 to press down. Simultaneously, after another delay of 1 second, the mounting base drive member 35 of the pressing mechanism 3 is triggered to push (i.e., push forward) the mounting base 34, quickly delivering the tail of the first roll 1 to the overlapping mechanism 4. At the same time, the second stamping member 42 at the lower end of the overlapping mechanism 4 is activated, and riveting is used to rivet the tail of the first roll 1 and the head of the second roll 2 together, then releases them. Simultaneously, the roll blocking mechanism 8 begins to retract, and the mounting base drive member 35 drives the mounting base 34 to retract. When the preset position is reached, the first pressing member 31 can be released after a delay of 1.5 seconds.

[0102] e. At this time, as the steel strip is pulled forward by the coil guide mechanism of the processed part, the tail of the first coil 1 and the joint of the second coil 2 are pulled out of the mold and reach the flat pressing mechanism 5. The flat pressing mechanism 5 delays for a preset time (e.g., several seconds) to make the first roller 51 and the second roller 52 move. The two rollers rotate while pressing the overlapping joint flat. The overlapping is completed and the hydraulic system automatically closes.

[0103] f. Finally, remove the excess steel strip from the overlapping mechanism 4, and use a crane to fix the steel coil back onto the first coil 1 to start the next cycle.

[0104] It should be noted that the various embodiments in this specification are described in a progressive manner, with each embodiment focusing on the differences from other embodiments. The same or similar parts between the various embodiments can be referred to each other.

[0105] The embodiments of the present invention have been described in detail above, but the content described is only a preferred embodiment of the present invention and should not be considered as limiting the scope of the present invention. All equivalent changes and modifications made within the scope of the present invention should still fall within the scope of the present invention. After reading this invention, those skilled in the art will understand that various equivalent modifications to the present invention fall within the scope defined by the appended claims. Unless otherwise specified, the embodiments and features in the embodiments of the present invention can be combined with each other.

Claims

1. A roll material overlapping device, comprising: The first reel (61) is used for winding the first roll of material (1); The second reel (62) is used for winding the second roll (2); The overlapping mechanism (4) is used to overlap the first roll (1) and the second roll (2) to fix them together; The overlapping mechanism (4) and the first reel (61) form a first roll travel channel (1A) for the passage of the first roll (1); the overlapping mechanism (4) and the second reel (62) form a second roll travel channel (2A) for the passage of the second roll (2); the first roll travel channel (1A) is located above the second roll travel channel (2A); The roll material guiding mechanism is located in front of the overlapping mechanism (4) in the roll material traveling direction (LL) and is used to drive the roll material exiting the overlapping mechanism (4) forward; The roll splicing device is characterized in that it further includes: The pressing mechanism (3) is located in front of the first reel (61) and the second reel (62) in the roll travel direction (LL) and behind the overlapping mechanism (4). It is used to clamp the roll when the tail of either the first roll (1) or the second roll (2) is in the area facing the pressing mechanism (3). After clamping the roll, it is used to drive the clamped roll forward in the travel direction from the initial position of the pressing mechanism (3) to a preset position close to the overlapping mechanism (4). The average speed of the pressing mechanism (3) from the initial position to the preset position is greater than the running speed of the roll at the roll guide mechanism, so that when the pressing mechanism (3) moves forward to the preset position, the part of the roll to which the clamped part belongs, located in front of the outlet of the overlapping mechanism (4), forms a recessed structure.

2. The roll splicing equipment according to claim 1, characterized in that, It also includes a flattening mechanism (5) located in front of the overlapping mechanism (4) and behind the roll guiding mechanism. The flattening mechanism (5) includes a first roller (51) for supporting the roll material, and a second roller (52) located above the roll material and adjustable in the height direction (LH). The roll material located between the overlapping mechanism (4) and the first roller (51) is in an unsupported state, and the recessed structure is formed between the overlapping mechanism (4) and the first roller (51).

3. The roll splicing equipment according to claim 1, characterized in that, The pressing mechanism (3) includes a mounting base (34), a mounting base drive (35) for driving the mounting base (34) to move in the roll travel direction (LL), a spacer (33) fixed to the mounting base (34), a first pressing member (31) and a second pressing member (32) for moving along the mounting base (34) in the height direction (LH); the first pressing member drive (31A) for driving the first pressing member (31) to move in the height direction (LH) and the second pressing member drive (32A) for driving the second pressing member (32) to move in the height direction (LH) are both fixed to the mounting base (34); The first pressing element (31), the spacer (33), and the second pressing element (32) are arranged sequentially from top to bottom in the height direction (LH); a first roll material travel channel (1A) is formed between the first pressing element (31) and the spacer (33); a second roll material travel channel (2A) is formed between the spacer (33) and the second pressing element (32). When the tail of the first roll (1) is located in the area facing the first pressure member (31), the first pressure member (31) is used to move toward the first roll (1) in the height direction (LH), so that the first roll (1) is clamped between the first pressure member (31) and the spacer (33); when the first roll (1) is clamped between the first pressure member (31) and the spacer (33), the distance between the second pressure member (32) and the spacer (33) in the height direction (LH) is greater than the thickness of the roll in the second roll travel channel (2A); When the tail of the second roll (2) is located in the area facing the second pressure member (32), the second pressure member (32) is used to move toward the second roll (2) in the height direction (LH), so that the second roll (2) is clamped between the second pressure member (32) and the spacer (33); when the second roll (2) is clamped between the second pressure member (32) and the spacer (33), the distance between the first pressure member (31) and the spacer (33) in the height direction (LH) is greater than the thickness of the roll in the first roll travel channel (1A).

4. The roll splicing equipment according to claim 1, characterized in that, The overlapping mechanism (4) forms a channel structure, which includes a first channel (401), a second channel (402), and a third channel (403) formed sequentially from top to bottom in the height direction (LH); the outlet of the second channel (402) forms the outlet of the overlapping mechanism (4); A stamping structure is provided behind the channel structure, the stamping structure including a first stamping part (41) and a second stamping part (42) located below the first stamping part (41). When the second roll (2) is located in the second channel (402), the first channel (401) is used to insert the newly added first roll (1), and the first stamping part (41) is used to drive the part of the first roll (1) located behind the first channel (401) to move downward in the height direction (LH), so that the first roll (1) and the second roll (2) overlap each other. When the first roll (1) is located in the second channel (402), the third channel (403) is used to extend into the newly added second roll (2); the second stamping part (42) is used to drive the part of the second roll (2) located behind the third channel (403) to move upward in the height direction (LH), so that the second roll (2) overlaps with the first roll (1); Preferably, the overlapping mechanism (4) includes a support base (40) and a mounting housing fixedly connected to the support base (40); the channel structure is formed in the mounting housing; a positioning element (43) is provided between the first stamping part (41) and the second stamping part (42) in the height direction (LH); a first limiting position and a second limiting position of the positioning element (43) are formed in the mounting housing; When the positioning element (43) is in the first limiting position, the top of the positioning element (43) and the bottom of the first channel (401) are at the same height, and the bottom of the positioning element (43) and the top of the second channel (402) are at the same height. When the positioning element (43) is in the second limiting position, the top of the positioning element (43) and the bottom of the second channel (402) are at the same height, and the bottom of the positioning element (43) and the top of the third channel (403) are at the same height. The first stamping part (41) is used to drive the positioning part (43) from the first limit position to the second limit position; the second stamping part (42) is used to drive the positioning part (43) from the second limit position to the first limit position.

5. The roll splicing equipment according to claim 4, characterized in that, The mounting housing is fixedly connected to two limiting members (46), which are located on both sides of the positioning member (43) in the width direction (LW); the positioning member (43) is used to move in the height direction (LH) under the drive of the first stamping member (41) or the second stamping member (42). Each limiting member (46) has two limiting structures spaced at intervals along the height direction (LH) on the side facing the positioning member (43), and the side of the positioning member (43) facing each limiting member (46) has a limiting engagement structure that cooperates with the limiting structure. The upper limiting structure of the two limiting members (46) forms the first limiting position, and the lower limiting structure of the two limiting members (46) forms the second limiting position; Preferably, the limiting structure and the limiting mating structure are respectively a limiting protrusion and a limiting groove. The receiving groove corresponding to the limiting protrusion is opened in the limiting member (46). The limiting protrusion extends into the corresponding receiving groove. An elastic structure for abutting the limiting protrusion outward is provided between the bottom of the receiving groove and the limiting protrusion. When the limiting protrusion is not facing the limiting groove, the positioning member (43) abuts against the limiting protrusion, causing the limiting protrusion to retract into the receiving groove. When the limiting protrusion faces the limiting groove, the limiting protrusion extends out of the receiving groove and into the corresponding limiting groove, so that the positioning member (43) is limited to the corresponding limiting position. Preferably, the limiting structure and the limiting mating structure are respectively a limiting groove and a limiting protrusion. The receiving groove corresponding to the limiting protrusion is opened in the positioning member (43). The limiting protrusion extends into the corresponding receiving groove. An elastic structure for abutting the limiting protrusion outward is provided between the bottom of the receiving groove and the limiting protrusion. When the limiting protrusion is not facing the limiting groove, the limiting member (46) abuts against the limiting protrusion, causing the limiting protrusion to retract into the receiving groove. When the limiting protrusion faces the limiting groove, the limiting protrusion extends out of the receiving groove and into the corresponding limiting groove, so that the positioning member (43) is limited to the corresponding limiting position.

6. The roll splicing equipment according to claim 4, characterized in that, The roll overlap device further includes: a roll blocking mechanism (8), which is located in front of the overlap mechanism (4) in the roll travel direction (LL) to allow the roll output from the second channel (402) to pass through, and to prevent the roll extended from the first channel (401) and the third channel (403); Preferably, the roll material blocking mechanism (8) is a C-shaped plate; the C-shaped plate surrounds a channel through which the roll material output from the second channel (402) passes; the surface of the C-shaped plate forms a blocking structure for the roll material in the first channel (401) and the third channel (403); Preferably, the roll splicing equipment further includes a control device (100). A first roll material detection sensor (201) is provided between the first roll (61) and the pressing mechanism (3). The first roll material detection sensor (201) is positioned facing the first roll material travel channel (1A) and is used to continuously detect whether there is roll material in the first roll material travel channel (1A). A second roll material detection sensor (202) is provided between the second roll (62) and the pressing mechanism (3). The second roll material detection sensor (202) is positioned facing the second roll material travel channel (2A) and is used to continuously detect whether there is roll material in the second roll material travel channel (2A). The control device (100) is used to move the roll blocking mechanism (8) to a position with a first preset distance from the overlapping mechanism (4) when the detection results of the first roll detection sensor (201) and the second roll detection sensor (202) are both positive.

7. The roll splicing equipment according to claim 1, characterized in that, (S1 / V0)-(S1 / V1)≥Ta; Wherein, S1 is the distance between the initial position and the preset position; V1 is the average movement speed of the pressing mechanism (3) from the initial position to the preset position; Ta is the preset overlap time required to overlap the first roll (1) and the second roll (2); V0 is the roll running speed at the flat pressing mechanism (5); Preferably, the pressing mechanism (3) is used to release the clamped roll when the clamped roll reaches the preset position, or to release the clamped roll when the time the clamped roll is in the preset position reaches p% of the preset overlap time; more preferably, the value of p% is in the range of [5%, 100%].

8. The roll splicing equipment according to any one of claims 1-7, characterized in that, The roll overlap equipment also includes a control device (100). A first roll material detection sensor (201) is provided between the first roll (61) and the pressing mechanism (3). The first roll material detection sensor (201) is positioned facing the first roll material travel channel (1A) and is used to continuously detect whether there is roll material in the first roll material travel channel (1A). A second roll material detection sensor (202) is provided between the second roll (62) and the pressing mechanism (3). The second roll material detection sensor (202) is positioned facing the second roll material travel channel (2A) and is used to continuously detect whether there is roll material in the second roll material travel channel (2A). The output ends of the first roll material detection sensor (201) and the second roll material detection sensor (202) are both electrically connected to the input end of the control device (100). The control ends of the overlapping mechanism (4) and the pressing mechanism (3) are both electrically connected to the output end of the control device (100). Preferably, the roll splicing device further includes: The first size detection sensor (101) is used to detect the size of the first roll (1) wound on the first turntable; The second size detection sensor (102) is used to detect the size of the second roll (2) wound on the second turntable; The output terminals of the first size detection sensor (101) and the second size detection sensor (102) are both electrically connected to the input terminal of the control device (100); The output end of the control device (100) is electrically connected to the power supply control end of the overlapping mechanism (4) to control the on / off of the power supply to the overlapping mechanism (4); Preferably, the roll material overlapping equipment further includes an overlapping mechanism detection sensor (204) for detecting whether the overlapping mechanism (4) moves back and forth, and the output end of the overlapping mechanism detection sensor (204) is electrically connected to the input end of the control device (100); Preferably, a third roll material detection sensor (203) is provided in front of the outlet of the overlapping mechanism (4) for detecting whether there is roll material between the outlet of the overlapping mechanism (4) and the roll material guiding mechanism. The output end of the third roll material detection sensor (203) is electrically connected to the input end of the control device (100).

9. A control method for a roll material overlapping device as described in any one of claims 1-8, characterized in that, include: Step A: Determine whether the tail of the roll is located in the area facing the pressing mechanism (3). If it is determined to be yes, then the pressing mechanism (3) clamps the roll, and after clamping the roll, it moves the roll forward from the initial position of the pressing mechanism (3) to a preset position close to the overlapping mechanism (4) in the direction of travel; wherein, the average movement speed of the pressing mechanism (3) from the initial position to the preset position is greater than the roll running speed at the roll guiding mechanism, so that when the pressing mechanism (3) moves forward to the preset position, the part of the clamped roll located at the exit of the overlapping mechanism (4) forms a recessed structure; Step B: Use the overlapping mechanism (4) to overlap the first roll (1) and the second roll (2) to fix them together.

10. The control method according to claim 9, characterized in that, A first roll material detection sensor (201) is provided between the first roll (61) and the pressing mechanism (3). The first roll material detection sensor (201) is positioned facing the first roll material travel channel (1A) and is used to continuously detect whether there is roll material in the first roll material travel channel (1A). A second roll material detection sensor (202) is provided between the second roll (62) and the pressing mechanism (3). The second roll material detection sensor (202) is positioned facing the second roll material travel channel (2A) and is used to continuously detect whether there is roll material in the second roll material travel channel (2A). The specific method for determining whether the tail of a roll is located in the area facing the pressing mechanism (3) is as follows: if any roll detection sensor fails to detect the corresponding roll, the time when the tail of the corresponding roll is located in the area facing the pressing mechanism (3) is determined based on the time when the corresponding roll is not detected, the distance between the corresponding roll detection sensor and the pressing mechanism (3) in the roll travel direction (LL), and the roll travel speed.

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