Strip threading structure for slit strip threading machine

Abstract

A belt threading structure for a slit belt threading machine relates to the technical field of slit refractory brick production and comprises a connecting plate used for being connected with a lifting table, a second air cylinder and a clamping plate, the second air cylinder and the clamping plate are arranged on the connecting plate, a slit groove allowing a PE belt to vertically penetrate through is formed in the clamping plate, and a guide groove perpendicularly penetrating through the slit groove is formed in the clamping plate. A first air cylinder is distributed downwards at the telescopic end of the second air cylinder in the vertical direction, a pressing piece is arranged at the telescopic end of the first air cylinder in the horizontal direction, the pressing piece is used for penetrating through the guide grooves to be matched with the inner wall of the slit groove to clamp or loosen the PE belt, meanwhile, the pressing piece is matched with driving of the second air cylinder to achieve belt penetrating, and the two sides of the clamping plate communicate with the outside through the two guide grooves; the first air cylinder is a finger air cylinder, two clamping jaws of the first air cylinder are distributed on the two sides of the clamping plate, the number of the pressing pieces is two, the pressing pieces are connected with the clamping jaws of the first air cylinder respectively, and protruding parts are arranged on the pressing pieces. The threading efficiency of the threading machine is kept, and the probability that a PE belt is blocked due to friction damage is reduced.

Description

Technical Field

[0001] The utility model relates to the technical field of the production of slit refractory bricks, in particular to a tape threading structure for a slit tape threading machine. Background Art

[0002] The slit refractory brick is formed by casting refractory castable and then fired at high temperature. When making the casting mold, in order to form the slit channel inside the refractory brick, slit fillers with a certain thickness that can be burned out are usually arranged and fixed in the mold according to the slit structure. After casting, curing, demolding and drying of the brick blank, the finished product is obtained after high-temperature firing in a high-temperature kiln. During the high-temperature firing process, the slit fillers will be burned out, leaving a breathable slit channel.

[0003] When filling the slit fillers in the slit refractory brick, in order to improve the filling efficiency, there appears a Chinese utility model patent of an upper and lower end offset tape threading system of a slit refractory brick casting mold tape threading machine with the patent number of CN215471856U. In the above-mentioned utility model patent, the lifting platform is used to independently lift and adjust the positions of the upper and lower two clamping mechanisms, and then cooperate with the PE tape connected to the clamping mechanism to realize the automation of tape threading of the large and small end plates of the casting mold, thereby improving the tape threading efficiency. The connection between the clamping mechanism and the PE tape is realized by moving the tightly pressed PE tape downward along the guiding groove by a specific distance through a pressing member.

[0004] During the process of moving the PE tape downward along the guiding groove by the pressing member, dust and other sundries often enter the slit groove, resulting in the friction force between the PE tape and the inner wall of the guiding groove being greater than the friction force between the PE tape and the pressing member. As a result, slipping often occurs between the pressing member and the PE tape, so it is inevitable that the single-slip amount of the PE tape does not meet the design requirements, thus affecting the tape threading of the PE tape and the production of the mold. When the PE tape is moved in the guiding groove, the friction between the PE tape and the inner wall of the guiding groove will cause burrs on the surface of the PE tape, thereby increasing the probability of jamming when the PE tape passes through the corresponding slit groove. When the surface of the PE tape is rough, it will also cause the inner wall of the slit of the cast slit refractory block to be rough, and in severe cases, the ventilation effect of the slit of the slit refractory block will be low. Summary of the Utility Model

[0005] The utility model aims to provide a tape threading structure for a slit tape threading machine to maintain the tape threading efficiency of the tape threading machine and reduce the probability of jamming caused by friction damage of the PE tape.

[0006] To solve the above technical problems, the specific solution adopted by the utility model is as follows:

[0007] A tape threading structure for a slit tape threading machine, comprising a connecting plate for connecting a lifting table, a second cylinder and a clamping plate provided on the connecting plate. A slit groove for the vertical passage of a PE tape is provided on the clamping plate, and a guiding groove perpendicular to and communicating with the slit groove is provided on the clamping plate. A first cylinder is distributed vertically downward along the telescopic end of the second cylinder. A pressing member is provided horizontally along the telescopic end of the first cylinder. The pressing member is used to pass through the guiding groove and cooperate with the inner wall of the slit groove to clamp or release the PE tape. At the same time, it cooperates with the drive of the second cylinder to achieve tape threading. Two guiding grooves are provided for both sides of the clamping plate to communicate with the outside. The first cylinder is a finger cylinder, and the two jaws of the first cylinder are distributed on both sides of the clamping plate;

[0008] Two pressing members are provided and are respectively connected to the jaws of the first cylinder. A convex portion is provided on the pressing member. The convex portion is used to penetrate into or out of the guiding groove along with the pressing member driven by the first cylinder to clamp or release the PE tape.

[0009] As a further optimization of the tape threading structure for a slit tape threading machine of the present utility model, the first cylinder and the second cylinder are connected by a connecting mechanism. The connecting mechanism includes an L-shaped connecting plate with a horizontal side connected to the telescopic end of the second cylinder, a matching connecting plate fixed on the vertical surface of the L-shaped connecting plate, and a limiting slider connected to the cylinder body of the first cylinder. A limiting sliding groove for the horizontal sliding of the limiting slider is provided on the matching connecting plate. Auxiliary springs and adjusting studs are respectively provided at both ends of the limiting sliding groove. The auxiliary spring is arranged between the limiting sliding groove and the horizontal side surface of the limiting slider. The adjusting stud is threadedly connected to a threaded hole provided on the inner wall of the limiting sliding groove. The end of the adjusting stud abuts against the other horizontal side surface of the limiting slider to adjust the position of the first cylinder so that the two pressing members are centrosymmetric with the slit groove as the center.

[0010] As a further optimization of the tape threading structure for a slit tape threading machine of the present utility model, a control disk is provided at the end of the adjusting stud passing through the limiting sliding groove, and a cross groove is provided on the control disk.

[0011] As a further optimization of the tape threading structure for a slit tape threading machine of the present utility model, the lifting stroke of the convex portion driven by the second cylinder corresponds to the guiding groove.

[0012] As a further optimization of the tape threading structure for a slit tape threading machine of the present utility model, the vertical length of the guiding groove is 0.6 - 0.8 times the vertical length of the clamping plate.

[0013] As a further optimization of the tape threading structure for a slit tape threading machine of the present utility model, the thickness of the convex portion is 0.7 - 0.8 times the thickness of the clamping plate.

[0014] As a further optimization of the tape threading structure for a slit tape threading machine of the present utility model, a protective layer is fixed on the side surface of the convex portion facing the guiding groove, and the protective layer is made of rubber.

[0015] As a further optimization of the tape threading structure for a slit tape threading machine of the present utility model, a sponge layer is provided on the inner wall of the slit groove.

[0016] The present utility model cooperates with the first cylinder to clamp both sides of the PE tape by arranging two guiding grooves and two pressing members, and then can cooperate with the second cylinder to drive the two pressing members to drive the PE tape to move steadily downward to complete the preliminary tape threading. During the process of the pressing members clamping the PE tape, the raised portions provided on the pressing members will pass through the guiding grooves to maintain the stability of clamping the PE tape. When the two pressing members cooperate with the raised portions to drive the PE tape to move downward through the slit groove on the clamping plate, the PE tape will be steadily dragged downward by the clamping forces on both sides. That is, the probability of the PE tape slipping due to unequal frictional forces on both sides during dragging is reduced, and further the dragging amount of the PE tape is the same as the stroke of the second cylinder, so as to maintain a stable and design requirement-compliant single downward movement amount of the PE tape.

[0017] The present utility model makes the forces on both sides of the PE tape uniform by arranging two pressing members and the raised portions of the two pressing members, that is, makes the clamped PE tape stay at the center of the slit groove. When the PE tape is dragged for preliminary tape threading, the PE tape will also stay relatively stably at the center of the slit groove due to uniform force, that is, the probability of friction contact with the inner wall of the slit groove is relatively low. When reducing the frictional damage of the PE tape with the inner wall of the slit groove during the preliminary tape threading of the PE tape being dragged, the probability of the PE tape having burrs and other situations due to friction is also reduced, that is, the probability of the PE tape being stuck in the clamping plate due to frictional damage and affecting the tape threading efficiency is reduced. BRIEF DESCRIPTION OF THE DRAWINGS

[0018] Figure 1 is a three-dimensional structural schematic diagram of the present utility model;

[0019] Figure 2 is a sectional structural schematic diagram of the present utility model;

[0020] Figure 3 is a partial enlarged structural schematic diagram of the present utility model.

[0021] Reference numerals: 1, PE tape; 2, clamping plate; 201, slit groove; 3, guiding groove; 4, pressing member; 401, raised portion; 5, first cylinder; 6, connecting plate; 7, second cylinder; 8, connecting mechanism; 801, L-shaped connecting plate; 802, adjusting screw; 803, cooperating connecting plate; 804, limiting slider; 805, limiting chute; 806, auxiliary spring. DETAILED DESCRIPTION OF THE EMBODIMENTS

[0022] What is the same as that proposed in the prior art of the CN215471856U in this utility model is that both include a connecting plate 6 for connecting with a lifting platform, a clamping plate 2 arranged on the connecting plate 6, and a second cylinder 7. A slit groove 201 for the vertical passing of the PE tape 1 is provided on the clamping plate 2, and a guiding groove 3 vertically penetrating the slit groove 201 is provided on the clamping plate 2. A first cylinder 5 is distributed vertically downward along the telescopic end of the second cylinder 7, and a pressing member 4 is arranged horizontally along the telescopic end of the first cylinder 5. The pressing member 4 is used to cooperate with the first cylinder 5 to pass through the guiding groove 3 and cooperate with the inner wall of the slit groove 201 to clamp or release the PE tape 1. At the same time, in cooperation with the vertical telescopic movement of the telescopic end of the second cylinder 7, the single-slip of the downward dragging of the PE tape 1 is realized. After repeating the above operations multiple times, the pre-tape threading of the PE tape 1 and the tape threading of the later-stage preparation mold can be realized. The differences between this utility model and the utility model with the patent number CN215471856U will be elaborated below:

[0023] As Figure 1 and Figure 2 shown, this utility model includes two guiding grooves 3. The two guiding grooves 3 penetrate both sides of the clamping plate 2 to connect the slit groove 201 with the outside. The vertical length of the guiding groove 3 is 0.7 times the vertical length of the clamping plate 2, so that the pressing member 4 can slide a larger amount, and thus the amount that the PE tape 1 can be dragged at a single time is larger, that is, the efficiency of the pre-tape threading and the tape threading of the later-stage preparation mold is improved. The guiding groove 3 corresponds to the vertical lifting stroke of the second cylinder 7, so that the pressing member 4 can maintain a larger moving amount, that is, maintain a larger amount of the PE tape 1 dragged at a single time, thereby improving the efficiency of the pre-tape threading and the tape threading of the later-stage preparation mold.

[0024] A sponge layer with a smooth surface is provided on the inner wall of the slit groove 201. The setting of the sponge layer can reduce the frictional damage between the PE tape 1 and the inner wall of the slit groove 201, that is, reduce the probability of scratches and burrs on the surface of the PE tape 1. Thus, when casting refractory materials subsequently, the probability of blockage on the inner wall of the slit of the formed slit refractory block due to the scratches and burrs on the surface of the PE tape 1 is reduced. At the same time, the probability of jamming caused by the scratches and burrs on the surface of the PE tape 1 when the PE tape 1 passes through the mold is also reduced.

[0025] The first cylinder 5 is a finger cylinder, and the two clamping jaws of the first cylinder 5 are distributed on both sides of the clamping plate 2. At the same time, the two clamping jaws are centrosymmetric with the slit groove 201 as the center. Both clamping jaws of the first cylinder 5 are connected with pressing members 4, so that the two pressing members 4 are driven by the first cylinder 5 to approach or move away from the clamping plate 2, and at the same time, the two pressing members 4 are also centrosymmetric with the slit groove 201 as the center. The two pressing members 4 are centrosymmetric with the slit groove 201 as the center, which will keep the PE tape 1 in the center state of the slit groove 201 during the process of the PE tape 1 being clamped and dragged by the pressing members 4 for tape threading, thereby reducing the probability or degree of friction between the PE tape 1 and the inner wall of the slit groove 201 when the PE tape 1 is dragged for tape threading, that is, reducing the damage of the PE tape 1 caused by friction itself, and at the same time reducing the probability of the PE tape 1 slipping due to unequal frictional forces on both sides.

[0026] One end of the pressing member 4 facing the guide groove 3 is provided with a protrusion 401. The protrusion 401 is used to penetrate into or out of the guide groove 3 as the pressing member 4 approaches or moves away from the clamping plate 2, so as to clamp or loosen the PE tape 1. The thickness of the protrusion 401 is 0.75 times the thickness of the clamping plate 2. Therefore, when the two protrusions 401 approach each other to clamp the PE tape 1, it can avoid the contact between the pressing member 4 and the clamping plate 2, thereby reducing the structural damage caused by the mutual extrusion of the pressing member 4 and the clamping plate 2. A protective layer is fixed on the side of the protrusion 401 facing the guide groove 3, and the protective layer is supported by rubber. When the protrusion 401 presses the PE tape 1, the protective layer supported by rubber will maintain the frictional force between the protrusion 401 and the PE tape 1, that is, maintain the connection stability between the protrusion 401 and the corresponding position of the PE tape 1, so that the PE tape 1 can be stably pushed downward to realize a stable and design-required tape threading process.

[0027] As Figure 3 shown, the first cylinder 5 is connected to the second cylinder 7 through a connecting mechanism 8. The connecting mechanism 8 includes an L-shaped connecting plate 801 whose horizontal side is connected to the telescopic end of the second cylinder 7, a mating connecting plate 803 fixed on the vertical surface of the L-shaped connecting plate 801, and a limiting slider 804 connected to the cylinder block of the first cylinder 5. A limiting chute 805 for the horizontal sliding of the limiting slider 804 is provided on the mating connecting plate 803. The setting of the L-shaped connecting plate 801 can cooperate with the limiting chute 805 and the limiting slider 804 to keep the first cylinder 5 and the second cylinder 7 in a relatively perpendicular state, so that the second cylinder 7 can drive the first cylinder 5 to move along the vertical direction of the clamping plate 2, thereby realizing the vertical dragging of the PE tape 1, that is, realizing the relatively stable and design-required pre-tape threading of the PE tape 1 and the tape threading for subsequent mold preparation.

[0028] Auxiliary springs 806 and adjustment studs 802 are respectively provided at both ends of the limiting chute 805. The auxiliary spring 806 is arranged between one end wall of the limiting chute 805 and the side surface in the sliding direction of the limiting slider 804. The setting of the auxiliary spring 806 can increase the damping when the limiting slider 804 slides towards the side of the auxiliary spring 806, that is, increase the difficulty of the limiting slider 804 sliding towards the corresponding side. One end of the adjustment stud 802 abuts against the other side surface in the sliding direction of the limiting slider 804, and the adjustment stud 802 is threadedly connected to a threaded hole opened on the corresponding side wall of the limiting chute 805. The cooperation between the adjustment stud 802 and the threaded hole can adjust the relative position of the limiting slider 804. During the adjustment process, it will also cooperate with the damping provided by the auxiliary spring 806 to achieve easy control of the sliding amount of the limiting slider 804, that is, maintain the relative accuracy of adjusting the limiting slider 804, and further maintain the relative accuracy of adjusting the first cylinder 5. Thus, when the position accuracy of the first cylinder 5 is insufficient due to assembly errors during the assembly of the first cylinder 5 by the staff, the position of the first cylinder 5 can be adjusted, so that the two jaws of the first cylinder 5 are centrosymmetric with the slit groove 201 as the center.

[0029] A control disk is fixed at one end of the adjustment stud 802 away from the limiting slider 804, and a cross slot is provided on the control disk. Thus, it is convenient for the staff to use the corresponding tool to control the rotation of the adjustment stud 802, and further achieve relatively convenient position adjustment of the first cylinder 5. The cross slot can be replaced with a straight slot or a hexagonal slot, etc. As long as it can assist the staff in controlling the rotation of the adjustment stud 802.

[0030] During specific use, first, the rotation control screw column 802 is controlled through the control panel and the cross slot. During the control process, the damping provided by the auxiliary spring 806 will be used to accurately control the position of the first cylinder 5, so that the pressing member 4 connected to the two jaws of the first cylinder 5 is centrosymmetric with the slit groove 201 as the center. Then, the first cylinder 5 will drive the two pressing members 4 to make the corresponding two convex portions 401 approach each other. When the two convex portions 401 approach each other, they will pass through the two guide grooves 3, and then the PE belt 1 will be pressed by the protective layer. After the PE belt 1 is pressed, the telescopic movement of the second cylinder 7 will be used to drive the first cylinder 5, the pressing member 4 and the convex portion 401 to move vertically, so that the convex portion 401 drives the PE belt 1 to drag the PE belt 1 to slide a certain amount once under the guidance of the guide groove 3. Then, the first cylinder 5 will drive the two pressing members 4 to move away from each other, and at the same time, the second cylinder 7 will also reset. After repeating the process of dragging the PE belt 1 to slide a designed amount once and resetting it multiple times, the work of threading the PE belt 1 through the slit groove 201 in the early stage and threading the mold in the subsequent stage can be completed more stably and in line with the design requirements compared with the existing method. During the above process, the PE belt 1 will also remain at the central position of the slit groove 201 due to uniform force, thereby reducing the friction between the PE belt 1 and the inner wall of the slit groove 201, that is, reducing the reduction of the single-slip amount caused by friction and the damage to the surface of the PE belt 1 itself.

[0031] For the parts not clarified in the above embodiments, such as how the first cylinder 5 and the second cylinder 7 control and cooperate to achieve the threading process, it should be understood as the prior art known or should be known to those skilled in the art.

Claims

1. A tape threading structure for a slit tape threading machine, comprising a connecting plate (6) for connecting a lifting platform, a second cylinder (7) and a clamping plate (2) arranged on the connecting plate (6), a slit groove (201) for a PE tape (1) to vertically pass through is provided on the clamping plate (2), and a guide groove (3) vertically penetrating the slit groove (201) is provided on the clamping plate (2), a first cylinder (5) is vertically distributed downwardly at the telescopic end of the second cylinder (7), a pressing member (4) is horizontally provided at the telescopic end of the first cylinder (5), the pressing member (4) is used to pass through the guide groove (3) and cooperate with the inner wall of the slit groove (201) to clamp or release the PE tape, and at the same time cooperate with the drive of the second cylinder (7) to realize tape threading, characterized in that: The guide groove (3) is provided with two for connecting the two sides of the clamping plate (2) with the outside world. The first cylinder (5) is a finger cylinder. The two clamping claws of the first cylinder (5) are distributed on the two sides of the clamping plate (2). The clamping piece (4) is provided with two jaws respectively connected to the clamping claws of the first cylinder (5), and a protrusion (401) is provided on the clamping piece (4). The protrusion (401) is used to penetrate into or out of the guide groove (3) as the clamping piece (4) is driven by the first cylinder (5) to clamp or loosen the PE belt (1).

2. A tape threading structure for a slit tape threading machine according to claim 1, characterized in that: The first cylinder (5) and the second cylinder (7) are connected via a connecting mechanism (8), the connecting mechanism (8) comprising an L-shaped connecting plate (801) connected to the telescopic end of the second cylinder (7) on the horizontal side, a matching connecting plate (803) fixed on the vertical surface of the L-shaped connecting plate (801), and a limiting slide block (804) connected to the cylinder body of the first cylinder (5), the matching connecting plate (803) being provided with a limiting slide groove (805) for the limiting slide block (804) to slide horizontally, and the limiting slide groove (805) is divided into two ends. An auxiliary spring (806) and a regulating stud (802) are separately provided. The auxiliary spring (806) is arranged between the limiting slide groove (805) and the horizontal side of the limiting slider (804). The regulating stud (802) is threadedly connected to a threaded hole opened on the inner wall of the limiting slide groove (805). The end of the regulating stud (802) touches the other side of the limiting slider (804) horizontally to adjust the position of the first cylinder (5) so that the two clamping members (4) are symmetrical with the slit groove (201) as the center.

3. A tape threading structure for a slit tape threading machine according to claim 2, characterized in that: One end of the regulating stud (802) passing through the limiting slide groove (805) is provided with a control disk, and a cross groove is provided on the control disk.

4. A tape threading structure for a slit tape threading machine according to claim 1, characterized in that: The lifting stroke of the protrusion (401) driven by the second cylinder (7) corresponds to the guide groove (3).

5. A tape threading structure for a slit tape threading machine according to claim 1, characterized in that: The vertical length of the guide groove (3) is 0.6 to 0.8 times the vertical length of the clamping plate (2).

6. A tape threading structure for a slit tape threading machine according to claim 1, characterized in that: The thickness of the protruding portion (401) is 0.7 to 0.8 times the thickness of the clamping plate (2).

7. A tape threading structure for a slit tape threading machine according to claim 1, characterized in that: A protective layer is fixed on a side of the protruding portion (401) facing the guide groove (3), and the protective layer is made of rubber.

8. A tape threading structure for a slit tape threading machine according to claim 1, characterized in that: A sponge layer is provided on the inner wall of the slit groove (201).

Images