Hot melt adhesive pelletizer

Abstract

The utility model relates to the technical field of hot melt adhesive production, in particular to a hot melt adhesive pelletizer, comprising a frame, a pelletizing assembly mounted on the frame for pelletizing a plurality of hot melt adhesive strips, and a traction assembly arranged in front of the pelletizing assembly, the traction assembly comprising a traction shaft rotatably connected to the frame, a mounting shaft arranged above the traction shaft, and a first driving component mounted on the frame for driving the traction shaft to rotate, the traction shaft is provided with a plurality of traction ring grooves for accommodating hot melt adhesive at intervals on the left and right, the mounting shaft is provided with a plurality of guide rings for correspondingly extending into a plurality of traction ring grooves, the guide rings rotate in the opposite direction to the traction shaft to cooperate with the traction ring grooves to drive the clamped hot melt adhesive to be transported forward. The implementation of the utility model can prevent the deviation between the traction shaft and the mounting shaft of the hot melt adhesive strips, avoid the hot melt adhesives from interfering with each other and stacking, ensure the smooth rotation of the traction shaft, prevent the pelletizing assembly from stopping the production of hot melt adhesive pellets, and ensure the pelletizing progress of the hot melt adhesive.

Description

Technical Field

[0001] The utility model relates to the technical field of hot melt adhesive production, in particular to a hot melt adhesive pelletizer. Background Art

[0002] Hot melt adhesive is an adhesive product that melts when heated and hardens when cooled to form bonding strength. Since it can be melted when heated, hot melt adhesive does not need solvent to wet the surface of the adherend, so hot melt adhesive is also an environmentally friendly adhesive. For hot melt adhesive in granular form, the hot melt adhesive raw materials are first heated and stirred in a reactor, and then the heated and mixed hot melt adhesive raw materials are filtered and extruded from a molding die into long strips. The long strips of hot melt adhesive are then cooled and solidified by being immersed in the coolant in the cooling tank and then cut into granules by a pelletizer to obtain rubber pellets.

[0003] The hot melt adhesive pelletizer in the prior art generally includes a pelletizer component and a traction component. The traction component includes two counter-rotating traction shafts, which direct the long hot melt adhesive placed between the two traction shafts toward the pelletizer component, and cooperate with the pelletizer mechanism to cut the hot melt adhesive from the long strip into pellets. However, since the molding die can extrude multiple hot melt adhesive strips at the same time, the multiple hot melt adhesive strips are prone to deviate from each other during the conveying process, causing the hot melt adhesives to interfere with each other and stack, blocking the gap between the two traction shafts so that the traction shafts cannot rotate, thereby stopping the hot melt adhesive pelletizer from producing hot melt adhesive pellets, affecting the hot melt adhesive pelletizing progress. Utility Model Content

[0004] The technical problem to be solved by the utility model is to provide a hot melt adhesive pelletizer which can prevent the hot melt adhesives from interfering with each other and stacking.

[0005] In order to solve the above technical problems, the utility model provides a hot melt adhesive pelletizer, including a frame, a pelletizing assembly installed on the frame for pelletizing multiple hot melt adhesives, and a traction assembly arranged in front of the pelletizing assembly, the traction assembly including a traction shaft rotatably connected to the frame, a mounting shaft arranged above the traction shaft, and a first driving component installed on the frame for driving the traction shaft to rotate, the traction shaft is provided with a plurality of traction ring grooves for accommodating hot melt adhesive at intervals on the left and right, the mounting shaft is provided with a plurality of guide rings for one-to-one corresponding extension into the plurality of traction ring grooves, the guide ring rotates in the opposite direction to the traction shaft to cooperate with the traction ring groove to drive the clamped hot melt adhesive to be conveyed forward.

[0006] As an improvement of the above solution, the widths of the traction ring groove and the guide ring are both greater than the outer diameter of the hot melt adhesive, the width of the guide ring is smaller than the traction ring groove, and the depth of the traction ring groove is greater than twice the outer diameter of the hot melt adhesive.

[0007] As an improvement to the above solution, a plurality of anti-slip horizontal strips are evenly distributed on the outer circumference of the guide ring.

[0008] As an improvement of the above solution, the guide rings are all rotatably connected to the mounting shaft.

[0009] As an improvement of the above solution, sliders are provided at both ends of the installation shaft, and the sliders are connected to the frame in an up-and-down sliding manner.

[0010] As an improvement of the above solution, the frame is provided with two limit blocks which are arranged above the slider in a one-to-one correspondence, and the hot melt adhesive pelletizer also includes two compression springs whose upper and lower ends respectively resist the slider and the limit blocks.

[0011] As an improvement of the above solution, the limit block is provided with guide holes passing through the upper and lower sides of the limit block, and the upper side of the slider is provided with a guide rod that passes through the compression spring and the guide hole in sequence and is slidably connected to the guide hole up and down.

[0012] As an improvement of the above solution, the pelletizing assembly includes a cutter connected to the frame for vertical sliding, a cutter holder mounted on the frame and placed below the cutter, and a second driving component for driving the cutter to move up and down.

[0013] The implementation of this utility model has the following beneficial effects:

[0014] The hot melt adhesive pelletizer of the utility model is composed of a frame, a pelletizing assembly, a traction shaft, and a traction ring groove; the three mounting shafts and the guide ring cooperate with each other, which can prevent the hot melt adhesive strips from deviating between the traction shaft and the mounting shaft, avoid the hot melt adhesives from interfering with each other and stacking, ensure the smooth rotation of the traction shaft, prevent the pelletizing assembly from stopping the production of hot melt adhesive pellets, and ensure the pelletizing progress of the hot melt adhesive. BRIEF DESCRIPTION OF THE DRAWINGS

[0015] Figure 1 It is a left side view showing the structure of the hot melt adhesive pelletizer in the embodiment of the utility model;

[0016] Figure 2 This is a schematic front view of the structure in which the traction assembly is installed on the frame in the embodiment of the utility model;

[0017] Figure 3 for Figure 2 Magnified view at A in the middle;

[0018] Figure 4 This is a left side view showing the structure in which the guide ring is installed on the installation shaft in the embodiment of the utility model;

[0019] Figure 5 It is a left side view showing the structure in which the traction assembly is installed on the frame in the embodiment of the utility model;

[0020] Figure 6 It is a schematic front view of the structure in which the pelletizing assembly is installed on the frame in the embodiment of the utility model.

[0021] In the figure:

[0022] 100, frame; 110, limit block; 111, guide hole;

[0023] 200, pelletizing assembly; 210, cutting knife; 220, knife holder; 230, second driving component;

[0024] 300, traction assembly; 310, traction shaft; 311, traction ring groove; 320, mounting shaft; 321, guide ring; 322, anti-slip horizontal bar; 323, slider; 324, guide rod; 330, first driving component;

[0025] 400.Compression spring. DETAILED DESCRIPTION

[0026] The present invention is further described below in conjunction with the accompanying drawings and specific embodiments, so as to more clearly understand the technical ideas claimed for protection by the present invention. It is hereby stated that the directional terms such as up, down, left, right, front, back, inside, outside, etc. that appear or will appear in the text of the present invention are only based on the accompanying drawings of the present invention, and are not specific limitations of the present invention.

[0027] like Figure 1 As shown, a hot melt adhesive pelletizer in an embodiment of the utility model includes a frame 100, a pelletizing assembly 200 installed on the frame 100 for pelletizing multiple hot melt adhesives, and a traction assembly 300 arranged in front of the pelletizing assembly 200; in fact, after the multiple hot melt adhesives leaving the external molding mold are cooled through the cooling trough, the traction assembly 300 conveys the hot melt adhesive to the pelletizing assembly 200 at a preset conveying speed, and the pelletizing assembly 200 works at a designed pelletizing frequency, thereby realizing continuous output of hot melt adhesive pellets.

[0028] like Figure 2 , Figure 3 and Figure 5As shown, the traction assembly 300 includes a traction shaft 310 rotatably connected to the frame 100, a mounting shaft 320 arranged above the traction shaft 310, and a first driving component 330 installed on the frame 100 for driving the traction shaft 310 to rotate. The traction shaft 310 is provided with a plurality of traction ring grooves 311 for accommodating hot melt adhesive at intervals on the left and right, and the mounting shaft 320 is provided with a plurality of guide rings 321 for one-to-one correspondingly extending into the plurality of traction ring grooves 311. The guide rings 321 rotate in the opposite direction to the traction shaft 310 to cooperate with the traction ring grooves 311 to drive the clamped hot melt adhesive to be conveyed forward; in fact, the first driving component 330 can be a servo motor, which can set the rotation speed of the traction shaft 310, thereby setting the feeding speed of the hot melt adhesive; the number of the traction ring grooves 311 should be greater than or equal to the number of hot melt adhesive strips output by the external molding mold to ensure that the multiple hot melt adhesive strips output by the external molding mold are synchronously pelletized.

[0029] When working, Figure 2 and Figure 3 As shown, multiple hot melt adhesives are placed in multiple traction ring grooves 311 one by one, and are resisted by the upper guide ring 321 to prevent the hot melt adhesive from leaving the traction ring groove 311. Figure 5 The first driving component 330 drives the traction shaft 310 to rotate counterclockwise, and the hot melt adhesive in the traction ring groove 311 rotates from front to back (attached Figure 1 and Figure 5 The hot melt adhesive moves from "right" to "left" in the figure, and the friction of the hot melt adhesive drives the guide ring 321 to rotate clockwise, thereby feeding multiple hot melt adhesive strips and preventing the hot melt adhesive strips from running off track, avoiding the hot melt adhesives from interfering with each other and stacking, and ensuring the smooth rotation of the traction shaft 310.

[0030] It should be noted that a hot melt adhesive pelletizer of the present invention preferably also includes a controller (such as a PLC, a control computer, etc.), which controls the pelletizing frequency of the pelletizing component 200 and the output speed of the first driving component 330, thereby controlling the operation of the hot melt adhesive pelletizer.

[0031] In this embodiment, Figure 6 As shown, the pelletizing assembly 200 preferably includes a cutter 210 slidably connected to the frame 100 up and down, a knife holder 220 installed on the frame 100 and placed below the cutter 210, and a second driving component 230 for driving the cutter 210 to move up and down; the second driving component 230 can be a cylinder, an electric telescopic rod, a hydraulic cylinder, etc., by driving the cutter 210 to move up and down at a preset frequency, each time the cutter 210 and the knife holder 220 complete an opening and closing, a pelletizing cycle is completed, thereby realizing the pelletizing function of the pelletizing assembly 200.

[0032] The hot melt adhesive pelletizer of the utility model cooperates with the frame 100, the pelletizing assembly 200, the traction shaft 310, the traction ring groove 311; the 3 mounting shafts 320 and the guide ring 321 to prevent the hot melt adhesive strips from deviating between the traction shaft 310 and the mounting shaft 320, avoid the hot melt adhesives from interfering with each other and stacking, ensure the smooth rotation of the traction shaft 310, prevent the pelletizing assembly 200 from stopping the production of hot melt adhesive pellets, and ensure the pelletizing progress of the hot melt adhesive.

[0033] In the embodiment of the utility model, Figure 3 As shown, the widths of the traction ring groove 311 and the guide ring 321 are preferably larger than the outer diameter of the hot melt adhesive, and the width of the guide ring 321 is smaller than the traction ring groove 311, so that the hot melt adhesive guide ring 321 can extend into the traction groove; the depth of the traction ring groove 311 is preferably larger than twice the outer diameter of the hot melt adhesive to prevent the hot melt adhesive strip from protruding from the upper side of the traction ring groove 311, and the depth of the guide ring 321 extending into the traction ring groove 311 is greater than the outer diameter of the hot melt adhesive, ensuring that the hot melt adhesive will not leave the upper side of the traction ring groove 311 and that the hot melt adhesives will not interfere with each other.

[0034] Specifically, Figure 3 and Figure 4 As shown, the outer side of the guide ring 321 preferably has a plurality of anti-skid horizontal strips 322 evenly distributed around the circumference, so as to increase the friction coefficient between the hot melt adhesive and the guide ring 321 and reduce the probability of the guide ring 321 slipping relative to the hot melt adhesive strip.

[0035] It should be noted that the guide rings 321 are preferably rotatably connected to the installation shaft 320. In fact, the guide rings 321 can be rotatably connected to the installation shaft 320 through a round shaft and a round hole structure or a bearing. Multiple guide rings 321 are respectively rotatably connected to the installation shaft 320, so that the guide rings 321 do not affect each other.

[0036] In this embodiment, sliders 323 are preferably provided at both ends of the installation shaft 320, and the sliders 323 are connected to the frame 100 for up and down sliding. Under the action of gravity of the installation shaft 320 and the guide ring 321, the guide ring 321 presses the hot melt adhesive in the traction ring groove 311 one by one.

[0037] It is worth mentioning that due to the cooling, the outer diameter of the hot melt adhesive strip will change within a certain range. The sudden increase of the hot melt adhesive strip will cause the guide ring 321 to drive the installation shaft 320 to jump up. Therefore, in the present utility model, Figure 5As shown, the frame 100 is preferably provided with two limit blocks 110 which are arranged one-to-one above the slider 323. The hot melt adhesive pelletizer also preferably includes two compression springs 400 whose upper and lower ends respectively resist the slider 323 and the limit blocks 110. When the mounting shaft 320 jumps up, the slider 323 is driven downward and reset under the action of the compression spring 400 and air resistance, ensuring that the guide ring 321 can cooperate with the traction ring groove 311 to clamp the hot melt adhesive again.

[0038] Furthermore, the limit block 110 is preferably provided with a guide hole 111 passing through the upper and lower sides of the limit block 110, and the upper side of the slider 323 is preferably provided with a guide rod 324 which passes through the compression spring 400 and the guide hole 111 in sequence and is slidably connected to the guide hole 111 up and down. Under the action of the guide rod 324, the compression spring 400 is prevented from twisting and detaching from between the slider 323 and the limit block 110, and further the up and down movement of the slider 323 is now ensured to ensure the operation of the traction assembly 300.

[0039] The above are only specific embodiments of the present invention, and are not intended to limit the patent scope of the present invention. Any equivalent structure or equivalent process transformation made using the contents of the present invention specification and drawings, or directly or indirectly applied in other related technical fields, are also included in the patent protection scope of the present invention.

Claims

1. A hot melt adhesive pelletizer, characterized in that: It includes a frame, a pelletizing assembly installed on the frame for pelletizing multiple hot melt adhesives, and a traction assembly arranged in front of the pelletizing assembly, the traction assembly includes a traction shaft rotatably connected to the frame, a mounting shaft arranged above the traction shaft, and a first driving component installed on the frame for driving the traction shaft to rotate, the traction shaft is provided with a plurality of traction ring grooves for accommodating hot melt adhesive at intervals on the left and right, the mounting shaft is provided with a plurality of guide rings for correspondingly extending into the plurality of traction ring grooves, the guide rings rotate in the opposite direction to the traction shaft to cooperate with the traction ring grooves to drive the clamped hot melt adhesive to be transported forward.

2. A hot melt adhesive pelletizer according to claim 1, characterized in that: The widths of the traction ring groove and the guide ring are both greater than the outer diameter of the hot melt adhesive, the width of the guide ring is smaller than the traction ring groove, and the depth of the traction ring groove is greater than twice the outer diameter of the hot melt adhesive.

3. A hot melt adhesive pelletizer according to claim 1, characterized in that: A plurality of anti-slip horizontal strips are evenly distributed on the outer circumference of the guide ring.

4. A hot melt adhesive pelletizer according to claim 3, characterized in that: The guide rings are all rotatably connected to the mounting shaft.

5. A hot melt adhesive pelletizer according to claim 4, characterized in that: Slide blocks are arranged at both ends of the installation shaft, and the slide blocks are connected to the frame for vertical sliding.

6. A hot melt adhesive pelletizer according to claim 5, characterized in that: The frame is provided with two limit blocks which are arranged above the sliding block in a one-to-one correspondence, and the hot melt adhesive pelletizer also includes two compression springs whose upper and lower ends respectively resist the sliding block and the limit blocks.

7. A hot melt adhesive pelletizer according to claim 6, characterized in that: The limit block is provided with guide holes penetrating the upper and lower sides of the limit block, and the upper side of the slider is provided with a guide rod which passes through the compression spring and the guide hole in sequence and is connected to the guide hole in an up-and-down sliding manner.

8. A hot melt adhesive pelletizer according to claim 1, characterized in that: The pelletizing assembly comprises a cutter connected to the frame for vertical sliding, a cutter seat mounted on the frame and placed below the cutter, and a second driving component for driving the cutter to move up and down.

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