Hot melt adhesive stick slitting device

Abstract

The utility model relates to the technical field of glue stick slitting, in particular to a hot melt glue stick slitting device which comprises an installation frame and further comprises two conveying belts, a hot melt glue stick slitting device, a hot melt glue stick slitting device and a hot melt glue stick slitting device, the two conveying belts are arranged on the surface of the installation frame, and a cutting gap is reserved between the two conveying belts; the supporting frame is fixedly mounted at the top of the mounting frame; and the slitting mechanism is arranged at the bottom of the supporting frame and comprises a lifting part, two sets of pressing parts and a slitting knife, and the lifting part is connected with the supporting frame. The pressing rods in the pressing pieces on the two sides of the slitting knife synchronously press downwards, the two ends of a hot melt adhesive stick are fixed at the same time before cutting, deviation or shaking caused by single-side stress is avoided, it is guaranteed that the cut section is flat and smooth, the pressure sensors at the bottoms of the pressing rods monitor pressure in real time, the second motor is controlled through the PLC to adjust the height of the slitting knife, and the slitting knife is fixed. And the rubber stick is prevented from being flattened by overlarge pressure or unstable cutting caused by insufficient pressure is prevented.

Description

Technical Field

[0001] This utility model relates to the field of glue stick slitting technology, and in particular to a hot melt glue stick slitting device. Background Technology

[0002] Hot melt adhesive sticks are a type of solid adhesive. The product is white and opaque (high-strength type), non-toxic, easy to use, and does not carbonize with continuous use. It features rapid bonding, high strength, aging resistance, non-toxicity, good thermal stability, and tough adhesive film. It is available in stick and granule forms.

[0003] Traditional cutting devices only fix one end of the glue stick during slitting, leaving the other end free. For example, the environmentally friendly transparent hot melt glue stick slitting device (CN219504845U) uses a clamping component to directly clamp and fix one end of the glue stick. This causes the glue stick to easily shift or vibrate during cutting, affecting the flatness of the cut surface and even causing problems such as skewed cuts and burrs, thus reducing product quality. Some devices use mechanical clamping structures, which cannot adjust the clamping force in real time. When the pressure is too high, the hot melt glue stick may be flattened and deformed; when the pressure is insufficient, the glue stick is not firmly fixed and is prone to shaking during cutting, affecting slitting accuracy. Utility Model Content

[0004] The purpose of this invention is to provide a hot melt glue stick cutting device that solves the problems of uneven cuts caused by poor clamping effect during glue stick cutting and the glue stick being flattened during clamping.

[0005] To achieve the above objectives, the present invention adopts the following technical solution:

[0006] A hot melt glue stick cutting device includes a mounting frame and further includes:

[0007] Two conveyor belts are set on the surface of the mounting frame, with a cutting gap between them;

[0008] A support frame, which is fixedly installed on top of the mounting bracket;

[0009] The slitting mechanism is located at the bottom of the support frame and includes a lifting component, two sets of clamping components, and a slitting blade. The lifting component is connected to the support frame. The slitting blade is located at the bottom center of the lifting component and directly above the cutting gap. The two sets of clamping components are located on both sides of the slitting blade to clamp the slitting and unslitting hot melt glue sticks.

[0010] Preferably, the lifting component includes a mounting plate, a limiting plate, and two electric telescopic rods. Both electric telescopic rods are fixedly connected to the support frame. The mounting plate is fixedly installed at the output end of the two electric telescopic rods. The limiting plate is fixedly installed on the top of the mounting plate and slides through the support frame.

[0011] Preferably, the clamping component includes a pressure rod, two slide rods are fixedly installed on the top of the pressure rod, both slide rods slide through the mounting plate, springs are sleeved on the surface of the slide rods, the two ends of the springs are fixedly connected to the mounting plate and the pressure rod respectively, and the bottom of the pressure rod is uniformly provided with arc-shaped grooves for extruding hot melt glue sticks, and a pressure sensor is provided at the bottom of the arc-shaped grooves.

[0012] Preferably, the bottom of the mounting plate is provided with a sliding frame, which includes two vertical rods and one horizontal rod. The two vertical rods are fixedly installed on the top of the horizontal rod. The mounting plate and the limiting plate are both provided with vertical grooves. The two vertical rods are slidably connected inside the vertical grooves. The bottom of the horizontal rod is provided with an embedding groove. The slitting blade is provided inside the embedding groove. The side wall of the horizontal rod is provided with bolts. The surface of the slitting blade is provided with through holes for the bolts to pass through.

[0013] Preferably, a connecting sleeve is fixedly installed on the top of the sliding frame, and a circular hole is opened inside the mounting plate and the limiting plate. The connecting sleeve is inserted into the circular hole, and a second motor is fixedly installed inside the limiting plate. A screw is fixedly installed at the output shaft port of the second motor, and the screw and the connecting sleeve are threadedly connected.

[0014] Preferably, a partition plate is fixedly installed on the surface of the mounting frame, and the bottom of the partition plate is uniformly provided with dividing grooves for separating and conveying the hot melt glue sticks.

[0015] Preferably, four conveyor rollers are rotatably connected to the surface of the mounting frame. The four conveyor rollers are arranged in pairs inside the two conveyor belts to drive the two conveyor belts for conveying. A first motor is fixedly installed on the side wall of the mounting frame. Pulleys are fixedly installed at the ends of the two middle conveyor rollers. The two pulleys are connected by belt drive.

[0016] Preferably, two pads are fixedly mounted on the surface of the mounting frame, and the two pads are respectively located inside the two conveyor belts to support the conveyor belts.

[0017] This utility model has at least the following beneficial effects:

[0018] The pressure rods in the clamping parts on both sides of the slitting blade press down synchronously, fixing both ends of the hot melt glue stick at the same time before cutting, avoiding deviation or shaking caused by force on one side, and ensuring a flat and smooth cut surface. The pressure sensor at the bottom of the pressure rod monitors the pressure in real time, and the second motor controlled by the PLC adjusts the height of the slitting blade to prevent the glue stick from being flattened by excessive pressure or the cutting from being unstable due to insufficient pressure. Attached Figure Description

[0019] To more clearly illustrate the technical solutions of the embodiments of this utility model, the drawings used in the description of the embodiments will be briefly introduced below. Obviously, the drawings described below are some embodiments of this utility model. For those skilled in the art, other drawings can be obtained based on these drawings without creative effort.

[0020] Figure 1 This is a schematic diagram of the structure of this utility model;

[0021] Figure 2 This utility model Figure 1 Side view;

[0022] Figure 3 This utility model Figure 1 Disassembly diagram;

[0023] Figure 4 This is a schematic diagram of the support frame structure of this utility model;

[0024] Figure 5 This utility model Figure 4 Disassembly diagram;

[0025] Figure 6 This is a schematic diagram of the sliding frame structure of this utility model.

[0026] In the diagram: 1. Mounting frame; 2. Divider plate; 3. Support frame; 4. Conveyor belt; 5. Pad plate; 6. Pulley; 7. First motor; 8. Conveyor roller; 9. Sliding mechanism; 901. Electric telescopic rod; 902. Limiting plate; 903. Mounting plate; 904. Sliding blade; 905. Pressure rod; 906. Slide rod; 907. Spring; 908. Sliding frame; 909. Connecting sleeve; 910. Screw; 911. Second motor. Detailed Implementation

[0027] To make the objectives, technical solutions, and advantages of the embodiments of this utility model clearer, the technical solutions of the embodiments of this utility model will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are only some embodiments of this utility model, and not all embodiments. The components of the embodiments of this utility model described and shown in the accompanying drawings can generally be arranged and designed in various different configurations.

[0028] Therefore, the following detailed description of the embodiments of the present invention provided in the accompanying drawings is not intended to limit the scope of the claimed invention, but merely to illustrate selected embodiments of the invention. All other embodiments obtained by those skilled in the art based on the embodiments of the present invention without inventive effort are within the scope of protection of the present invention.

[0029] Reference Figure 1-6 A hot melt glue stick slitting device includes a mounting frame 1, two conveyor belts 4 disposed on the surface of the mounting frame 1 with a cutting gap between them; a support frame 3 fixedly mounted on the top of the mounting frame 1; and a slitting mechanism 9 disposed at the bottom of the support frame 3, including a lifting component, two sets of clamping components, and a slitting blade 904. The lifting component is connected to the support frame 3, the slitting blade 904 is disposed at the bottom center of the lifting component and directly above the cutting gap, and the two sets of clamping components are disposed on both sides of the slitting blade 904 for clamping the slitting and unslitting hot melt glue sticks.

[0030] The slitting blade 904 is positioned in the cutting gap between the two conveyor belts 4. During cutting, the lifting component moves the two sets of clamping components and the slitting blade 904 downwards synchronously. The two sets of clamping components first contact the hot melt glue stick and press it onto the conveyor belt 4. At this point, both conveyor belts 4 stop moving. As the lifting component continues to move downwards, the clamping components remain stationary. The slitting blade 904 then slits the hot melt glue stick. After slitting, the lifting component moves the clamping components and the slitting blade 904 upwards. After moving upwards, the two conveyor belts 4 can be used to separately transport the already cut hot melt glue stick and the hot melt glue stick to be cut next. This allows the two parts of the hot melt glue stick to be fixed during cutting, preventing the cutting surface from being uneven due to shaking caused by fixing only one end.

[0031] Furthermore, the lifting component includes a mounting plate 903, a limiting plate 902, and two electric telescopic rods 901. Both electric telescopic rods 901 are fixedly connected to the support frame 3. The mounting plate 903 is fixedly installed at the output end of the two electric telescopic rods 901. The limiting plate 902 is fixedly installed on the top of the mounting plate 903, and the limiting plate 902 slides through the support frame 3.

[0032] When the lifting device is in use, the two electric telescopic rods 901 are activated. The two electric telescopic rods 901 drive the mounting plate 903 to move vertically. The mounting plate 903 drives the two sets of clamping parts and the slitting blade 904 to move up and down synchronously. The limiting plate 902 can make the mounting plate 903 move only in the vertical direction, thus improving stability.

[0033] Furthermore, the clamping component includes a pressure rod 905, with two slide rods 906 fixedly mounted on the top of the pressure rod 905. Both slide rods 906 slide through the mounting plate 903. Springs 907 are sleeved on the surface of the slide rods 906. The two ends of the springs 907 are fixedly connected to the mounting plate 903 and the pressure rod 905, respectively. The bottom of the pressure rod 905 is uniformly provided with arc-shaped grooves for extruding hot melt adhesive sticks.

[0034] When the lifting component moves the pressing component and the slitting blade 904 downwards, the pressure rod 905 first contacts the hot melt glue stick. As the lifting component continues to move downwards, the pressure rod 905 remains stationary, and the spring 907 is compressed until the slitting blade 904 cuts the hot melt glue stick. After the cutting is completed, the lifting component moves the slitting blade 904 and the pressing component upwards, thereby releasing the pressure on the hot melt glue stick.

[0035] Furthermore, a sliding frame 908 is provided at the bottom of the mounting plate 903. The sliding frame 908 includes two vertical rods and one horizontal rod. The two vertical rods are fixedly installed on the top of the horizontal rod. Vertical grooves are provided inside both the mounting plate 903 and the limiting plate 902. The two vertical rods are slidably connected inside the vertical grooves. An embedding groove is provided at the bottom of the horizontal rod. A slitting blade 904 is provided inside the embedding groove. Bolts are provided on the side wall of the horizontal rod. Through holes for the bolts to pass through are provided on the surface of the slitting blade 904.

[0036] The slitting blade 904 is first inserted into the embedded groove, and then a bolt is used to pass through the through hole of the slitting blade 904 for secondary tightening, thereby fixing the slitting blade 904 and making it easy to disassemble and assemble.

[0037] Further, a connecting sleeve 909 is fixedly installed on the top of the sliding carriage 908. Round holes are provided inside the mounting plate 903 and the limiting plate 902. The connecting sleeve 909 is inserted into the round holes. A second motor 911 is fixedly installed inside the limiting plate 902. A screw rod 910 is fixedly installed at the output shaft port of the second motor 911. The screw rod 910 is threadedly connected to the connecting sleeve 909. The screw rod 910 is a ball screw. A pressure sensor is installed in the arc-shaped groove at the bottom of the pressure rod 905. When the pressure of the pressure rod 905 on the hot melt adhesive stick is too large, in order to prevent the hot melt adhesive stick from being flattened by the pressure, the cutting knife 904 can be made to contact the hot melt adhesive stick in advance by adjusting the height of the cutting knife 904. When adjusting its height, only need to start the second motor 911. The second motor 911 drives the screw rod 910 to rotate. The screw rod 910 drives the connecting sleeve 909 and the sliding carriage 908 to move in the vertical direction, so as to adjust the relative height between the cutting knife 904 and the pressure rod 905. The pressure F of the pressure rod 905 on the adhesive stick is determined by the compression amount of the spring 907. The formula is: F = k·Δx, where: k is the elastic coefficient of the spring 907 (a fixed value), and Δx is the compression amount of the spring 907 (that is, the displacement of the pressure rod 905 relative to the mounting plate 903). Assume that the total downward displacement distance of the mounting plate 903 is H, and the initial height of the cutting knife 904 is h (the vertical distance from the conveyor belt 4). Then: when the height of the cutting knife 904 is h1, the compression amount Δx1 of the spring 907 of the pressure rod 905 = H - h1 (it is necessary to satisfy h1 < H, otherwise the cutting knife 904 does not contact the adhesive stick). When the height of the cutting knife 904 is adjusted to h2 (h2 > h1), the compression amount Δx2 of the spring 907 = H - h2. Because h2 > h1, so Δx2 < Δx1, and the pressure F2 < F1. Core logic: By adjusting the height h of the cutting knife 904, change the "proportion of the total downward displacement distance H of the mounting plate 903 used to compress the spring 907", so as to control the elastic force of the spring 907 (that is, the pressure of the pressure rod 905). When the pressure F of the pressure rod 905 on the adhesive stick exceeds the threshold value, it may flatten the adhesive stick. At this time, start the second motor 911 to drive the cutting knife 904 to move downward (reduce the height h). The cutting knife 904 contacts the adhesive stick in advance, the compression amount Δx of the spring 907 decreases, and the pressure F decreases. When the pressure is insufficient, the pressure rod 905 cannot fix the adhesive stick firmly and shakes during cutting. At this time, start the second motor 911 to drive the cutting knife 904 to move upward (increase the height h). The cutting knife 904 contacts the adhesive stick later, the compression amount Δx of the spring 907 increases, and the pressure F increases. Further, a partition plate 2 is fixedly installed on the surface of the mounting frame 1. The bottom of the partition plate 2 is evenly provided with partition grooves for separately conveying the hot melt adhesive sticks. The partition grooves are smooth-treated to avoid affecting the conveying effect of the conveyor belt 4 on the hot melt adhesive sticks when they contact the partition grooves. The signal of the pressure sensor is transmitted to the PLC in real time. When the pressure exceeds the threshold value, the second motor 911 is automatically triggered to adjust the height of the cutting knife, forming a dynamic adjustment.

[0038] Furthermore, four conveyor rollers 8 are rotatably connected to the surface of the mounting frame 1. The four conveyor rollers 8 are arranged in pairs inside the two conveyor belts 4 to drive the two conveyor belts 4 for conveying. A first motor 7 is fixedly installed on the side wall of the mounting frame 1. Pulleys 6 are fixedly installed at the ends of the two middle conveyor rollers 8. The two pulleys 6 are connected by belt drive. By starting the first motor 7, the first motor 7 drives the conveyor rollers 8 to rotate. With the transmission between the two pulleys 6, the two conveyor belts 4 can rotate synchronously, thereby achieving the purpose of conveying the slit hot melt glue sticks and the unslit hot melt glue sticks.

[0039] Furthermore, two pads 5 are fixedly installed on the surface of the mounting frame 1. The two pads 5 are located inside the two conveyor belts 4 respectively to support the conveyor belts 4. By setting the pads 5, when the pressure bar 905 applies pressure to the hot melt glue stick, the pressure will be transmitted to the conveyor belt 4, and the pads 5 will support the conveyor belt 4.

[0040] In summary, the pressure rods 905 in the clamping parts on both sides of the slitting blade 904 press down synchronously, fixing both ends of the hot melt glue stick at the same time before cutting, avoiding deviation or shaking caused by force on one side, and ensuring a flat and smooth cut surface. The pressure sensor at the bottom of the pressure rod 905 monitors the pressure in real time, and adjusts the height of the slitting blade 904 through the PLC-controlled second motor 911 to prevent excessive pressure from flattening the glue stick or insufficient pressure from causing unstable cutting.

[0041] The foregoing has shown and described the basic principles, main features, and advantages of this utility model. Those skilled in the art should understand that this utility model is not limited to the above embodiments. The embodiments and descriptions in the specification are merely principles of this utility model. Various changes and modifications can be made to this utility model without departing from its spirit and scope, and all such changes and modifications fall within the scope of the claimed utility model. The scope of protection of this utility model is defined by the appended claims and their equivalents.

Claims

1. A hot melt glue stick cutting device, comprising a mounting frame (1), characterized in that, Also includes: Two conveyor belts (4) are set on the surface of the mounting frame (1) with a cutting gap between them; The support frame (3) is fixedly installed on the top of the mounting frame (1); The slitting mechanism (9) is located at the bottom of the support frame (3) and includes a lifting component, two sets of clamping components and a slitting blade (904). The lifting component is connected to the support frame (3). The slitting blade (904) is located at the bottom middle position of the lifting component and directly above the cutting gap. The two sets of clamping components are located on both sides of the slitting blade (904) to clamp the slitting and unslitting hot melt glue sticks.

2. The hot melt glue stick slitting device according to claim 1, characterized in that, The lifting component includes a mounting plate (903), a limiting plate (902), and two electric telescopic rods (901). Both electric telescopic rods (901) are fixedly connected to the support frame (3). The mounting plate (903) is fixedly installed at the output end of the two electric telescopic rods (901). The limiting plate (902) is fixedly installed on the top of the mounting plate (903) and slides through the support frame (3).

3. The hot melt adhesive rod slitting device according to claim 2, characterized in that, The clamping component includes a pressure rod (905), and two slide rods (906) are fixedly installed on the top of the pressure rod (905). Both slide rods (906) slide through the mounting plate (903). Springs (907) are sleeved on the surface of the slide rods (906). The two ends of the springs (907) are fixedly connected to the mounting plate (903) and the pressure rod (905) respectively. The bottom of the pressure rod (905) is uniformly provided with arc-shaped grooves for extruding hot melt glue sticks, and a pressure sensor is embedded in the bottom of the arc-shaped grooves.

4. A hot melt adhesive rod slitting device according to claim 3, characterized in that, The bottom of the mounting plate (903) is provided with a sliding frame (908), which includes two vertical rods and a horizontal rod. The two vertical rods are fixedly installed on the top of the horizontal rod. The mounting plate (903) and the limiting plate (902) are both provided with vertical grooves. The two vertical rods are slidably connected inside the vertical grooves. The bottom of the horizontal rod is provided with an embedding groove. The slitting blade (904) is provided inside the embedding groove. The side wall of the horizontal rod is provided with bolts. The surface of the slitting blade (904) is provided with through holes for the bolts to pass through.

5. A hot melt adhesive rod slitting device according to claim 4, characterized in that, A connecting sleeve (909) is fixedly installed on the top of the sliding frame (908). The mounting plate (903) and the limiting plate (902) have round holes inside. The connecting sleeve (909) is inserted into the round hole. A second motor (911) is fixedly installed inside the limiting plate (902). A screw (910) is fixedly installed on the output shaft port of the second motor (911). The screw (910) and the connecting sleeve (909) are threadedly connected.

6. A hot melt glue rod slitting device according to claim 1, characterized in that, The mounting bracket (1) is fixedly mounted with a partition plate (2), and the bottom of the partition plate (2) is evenly provided with dividing grooves for separating and conveying hot melt glue sticks.

7. A hot melt adhesive rod slitting device according to claim 1, characterized in that, The mounting frame (1) is rotatably connected to four conveyor rollers (8). The four conveyor rollers (8) are arranged in pairs inside the two conveyor belts (4) to drive the two conveyor belts (4) to convey. The side wall of the mounting frame (1) is fixedly installed with a first motor (7). The ends of the two middle conveyor rollers (8) are fixedly installed with pulleys (6). The two pulleys (6) are connected by belt drive.

8. A hot melt glue stick slitting device according to claim 1, characterized in that, Two pads (5) are fixedly installed on the surface of the mounting frame (1). The two pads (5) are located inside the two conveyor belts (4) respectively to support the conveyor belts (4).

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