EVA hot melt adhesive cutting device

Abstract

The utility model relates to an EVA (Ethylene Vinyl Acetate) hot melt adhesive cutting device which comprises a support, the support is provided with a working plane, a driving shaft which is in transmission connection with a motor arranged on the support is rotationally arranged on the support, and a first eccentric wheel and a second eccentric wheel are eccentrically connected to the driving shaft. The first eccentric wheel and the second eccentric wheel are sleeved with a first transmission sleeve and a second transmission sleeve respectively, the first transmission sleeve and the second transmission sleeve are fixedly connected with a first transmission rod and a second transmission rod respectively, and the end of the first transmission rod is hinged to a tool apron which is arranged on the support in a longitudinal sliding mode and located above the working plane. A cutter is arranged on the cutter holder, the end portion of the second transmission rod is hinged to a material stirring frame which can be horizontally arranged on the support in a sliding mode and is located above the operation plane, a material stirring roller is arranged on the material stirring frame in a rotating mode, and a one-way ratchet mechanism is arranged on a rotating shaft of the material stirring roller. According to the EVA hot melt adhesive cutting device, the cutting quality can be guaranteed, and the cutting efficiency is improved.

Description

Technical Field

[0001] This utility model relates to the field of hot melt adhesive production technology, and in particular to an EVA hot melt adhesive cutting device. Background Technology

[0002] In the footwear industry, the bonding of shoe components such as soles and insoles, linings and insoles, and uppers and soles can all be achieved using EVA hot melt adhesive. Based on the excellent softness and elasticity of EVA hot melt adhesive, it is suitable for shoe components that require bending and stretching. In the production of EVA hot melt adhesive, a cutting device is needed to cut the formed strips into segments of the required length for use. For example, the utility model patent "A Hot Melt Adhesive Sheet Cutting Device" (Publication No.: CN221066376U) discloses a structure that cuts hot melt adhesive sheets through the cooperation of a pushing mechanism and a cutting component. However, in the above structure, the actions of the pushing mechanism and the cutting component are driven by two separate motors, which may lead to asynchronous phenomena during cooperation, resulting in significant fluctuations in the length of the cut hot melt adhesive segments. Moreover, the pushing mechanism in the above structure is limited by the stroke of the pushing plate and is not suitable for cutting longer hot melt adhesive segments.

[0003] To address the aforementioned problems, this utility model provides improvements. Utility Model Content

[0004] This invention proposes an EVA hot melt adhesive cutting device, which solves the above-mentioned problems existing in the use of the prior art.

[0005] The technical solution of this utility model is implemented as follows:

[0006] An EVA hot melt adhesive cutting device includes a bracket with a working plane. A drive shaft rotatably mounted on the bracket and driven by a motor mounted on the bracket is eccentrically connected to the drive shaft. A first eccentric wheel and a second eccentric wheel are eccentrically connected to the drive shaft. A first transmission sleeve and a second transmission sleeve are respectively fitted onto the first eccentric wheel and the second transmission sleeve. A first transmission rod and a second transmission rod are respectively fixedly connected to the first transmission sleeve and the second transmission sleeve. The end of the first transmission rod is hinged to a blade holder that is longitudinally slidably mounted on the bracket above the working plane. A cutting blade is mounted on the blade holder. The end of the second transmission rod is hinged to a material feeding frame that is horizontally slidably mounted on the bracket above the working plane. A material feeding roller is rotatably mounted on the material feeding frame. A one-way ratchet mechanism is mounted on the rotating shaft of the material feeding roller.

[0007] Preferably, an adjusting frame is slidably mounted on the feeding frame, and an adjusting screw screw is rotatably mounted on the adjusting frame and screwed onto the feeding frame. The feeding roller is rotatably mounted on the adjusting frame.

[0008] Preferably, the feeding roller is fitted with a rubber feeding sleeve, and the outer surface of the feeding sleeve has a plurality of inclined anti-slip protrusions arranged in a ring along the axis of the feeding sleeve.

[0009] Preferably, the working plane has a groove opposite to the cutter, and the support has an inclined feeding plate located on the side of the groove away from the feeding roller, with the higher end of the feeding plate connected to the groove.

[0010] Preferably, the sliding seat formed on the blade holder is provided with a plurality of T-shaped sliding rods that can slide longitudinally between the cutter and the feeding roller. The lower end of the sliding rod is fixedly connected to a pressure plate. A spring is provided on the sliding rod between the sliding seat and the pressure plate. The pressure plate protrudes downward from the lower end of the cutter under the action of the spring.

[0011] Preferably, the working plane is provided with a plurality of guide plates that are vertically positioned between the cutter groove and the feeding roller and are perpendicular to the cutter groove.

[0012] Preferably, the working plane has two adjustment grooves parallel to the knife groove, and the bolt pairs on the guide plate are inserted into the adjustment grooves to fasten the guide plate to the bracket.

[0013] In summary, the beneficial effects of this utility model are as follows: the feeding action of the feeding roller and the cutting action of the cutter are driven by the same motor-driven drive roller, which can ensure that the feeding action and the cutting action are synchronized and accurately matched, ensuring that the hot melt adhesive segment under cutting remains at a constant length and thus ensuring the cutting quality, and improving the cutting efficiency. Attached Figure Description

[0014] To more clearly illustrate the technical solutions in the embodiments of this utility model or the prior art, the drawings used in the description of the embodiments or the prior art will be briefly introduced below. Obviously, the drawings described below are only some embodiments of this utility model. For those skilled in the art, other drawings can be obtained based on these drawings without creative effort.

[0015] Figure 1 This is a schematic diagram of the structure of this utility model;

[0016] Figure 2 This is a cross-sectional schematic diagram of the present invention;

[0017] Figure 3 This is a schematic diagram of the structure of this utility model after the support bracket has been removed;

[0018] Figure 4 This is a schematic diagram of the support structure in this utility model;

[0019] Figure 5This is a schematic diagram of the structure of the knife holder, cutter, and pressure plate in this utility model;

[0020] Figure 6 This is a schematic diagram of the material feeding frame, adjusting frame, and material feeding roller in this utility model.

[0021] In the diagram: 1. Bracket; 2. Working plane; 21. Knife groove; 22. Guide plate; 23. Adjustment groove; 3. Drive shaft; 4. First eccentric wheel; 5. Second eccentric wheel; 6. First transmission sleeve; 7. Second transmission sleeve; 8. First transmission rod; 9. Second transmission rod; 10. Knife holder; 101. Sliding seat; 11. Cutting knife; 12. Material feeding frame; 13. Material feeding roller; 14. One-way ratchet mechanism; 15. Adjustment frame; 151. Guide rod; 152. Adjustment screw; 16. Material feeding sleeve; 161. Anti-slip protrusion; 17. Feeding plate; 18. Sliding rod; 19. Pressure plate; 20. Spring. Detailed Implementation

[0022] The following will refer to the appendix in the embodiments of this utility model. Figure 1-6 The technical solutions in the embodiments of this utility model are clearly and completely described herein. Obviously, the described embodiments are only some embodiments of this utility model, and not all embodiments. Based on the embodiments of this utility model, all other embodiments obtained by those skilled in the art without creative effort are within the protection scope of this utility model.

[0023] As shown in the figure, an EVA hot melt adhesive cutting device includes a bracket 1, which has a working plane 2. A drive shaft 3, which is rotatably connected to a motor mounted on the bracket 1, is eccentrically connected to the drive shaft 3. A first eccentric wheel 4 and a second eccentric wheel 5 are respectively fitted onto the first eccentric wheel 4 and the second eccentric wheel 5. A first transmission sleeve 6 and a second transmission sleeve 7 are respectively fixedly connected to the first transmission sleeve 6 and the second transmission sleeve 7. The end of the first transmission rod 8 is hinged to a knife holder 10, which is longitudinally slidable on the bracket 1 above the working plane 2 via a linear guide rail. A cutter 11 is provided on the knife holder 10. The end of the second transmission rod 9 is hinged to a material feeding frame 12, which is horizontally slidable on the bracket 1 above the working plane 2 via a linear guide rail. A material feeding roller 13 is rotatably mounted on the material feeding frame 12. A one-way ratchet mechanism 14 is provided on the rotating shaft of the material feeding roller 13.

[0024] In the above structure, when cutting the molded EVA hot melt adhesive (hereinafter referred to as hot melt adhesive), the hot melt adhesive is placed on the working plane 2 and passes under the feeding roller 13 and the cutter 11. The feeding roller 13 abuts against the hot melt adhesive, and the motor drives the drive shaft 3 to rotate. The drive shaft 3 synchronously drives the first eccentric wheel 4 and the second eccentric wheel 5 to rotate eccentrically. The first eccentric wheel 4 and the second eccentric wheel 5 respectively drive the first transmission sleeve 6 and the second transmission sleeve 7 to rotate eccentrically on the first eccentric wheel 4 and the second eccentric wheel 5, so that the first transmission sleeve 6 and the second transmission sleeve 7 rotate eccentrically on the first eccentric wheel 4 and the second eccentric wheel 5, so that the first transmission sleeve 6 and the second transmission sleeve 7 rotate eccentrically on the first eccentric wheel 4 and the second eccentric wheel 5, so that the first transmission sleeve 6 and the second transmission sleeve 7 rotate eccentrically on the first eccentric wheel 4 and the second eccentric wheel 5, so that the first transmission sleeve 6 and the second transmission sleeve 7 rotate eccentrically on the first eccentric wheel 4 and the second eccentric wheel 7 ... The moving sleeve 6 and the second transmission sleeve 7 drive the cutter holder 10 to reciprocate longitudinally and the feeder 12 to reciprocate horizontally via the first transmission rod 8 and the second transmission rod 9, respectively. By adjusting the initial positions of the first eccentric wheel 4 and the second eccentric wheel 5 on the drive shaft 3, when the cutter holder 10 slides upward, the feeder 12 slides toward the cutter holder 10. When the feeder 12 drives the feeder roller 13 to slide toward the cutter holder 10, the rotation of the feeder roller 13 due to the friction generated by its contact with the hot melt adhesive is acted upon by the one-way ratchet mechanism 14 (i.e., Figure 1 The counterclockwise rotation of the feed roller 13 is restricted by the one-way ratchet mechanism 14 (the structure of the one-way ratchet mechanism 14 is a common existing technology, which will not be described in detail here). This causes the feed roller 13 to drive the hot melt adhesive to travel a certain distance on the working plane 2 through friction (the distance traveled depends on the eccentricity of the second eccentric wheel 5 on the drive shaft 3, that is, the single feed length of the hot melt adhesive can be adjusted by adjusting the eccentricity of the second eccentric wheel 5). Then, when the cutter 10 drives the cutter 11 to slide downward, the feed frame 12 drives the feed roller 13 to slide away from the cutter 10. At this time, the feed roller 13 is subjected to the action of the one-way ratchet mechanism 14. The friction between the hot melt adhesive and the cutting blade 11 generates rotation, preventing the hot melt adhesive from being pushed backward and causing it to be ejected. The cutting blade 11 moves downward under the drive of the blade holder 10 to cut the hot melt adhesive, thus completing one cutting operation. By repeatedly feeding the hot melt adhesive with the feeding roller 13 and coordinating the longitudinal reciprocating motion of the cutting blade 11, continuous cutting operations can be performed on the hot melt adhesive. Since the feeding action of the feeding roller 13 and the cutting action of the cutting blade 11 are driven by the same drive roller during the cutting process, the feeding action and the cutting action can be synchronized and accurately coordinated, ensuring that the cut hot melt adhesive segment remains at a constant length, thus ensuring the cutting quality and improving the cutting efficiency.

[0025] Furthermore, based on the above structure, an adjustment frame 15 is longitudinally slidably provided on the material feeding frame 12. Several guide rods 151 are fixedly erected on the adjustment frame 15 and pass through the material feeding frame 12. An adjustment screw 152 is rotatably provided on the adjustment frame 15 and screwed onto the material feeding frame 12. The material feeding roller 13 is rotatably provided on the adjustment frame 15. By rotating the adjustment screw 152, the adjustment screw 152 drives the adjustment frame 15 to slide longitudinally on the material feeding frame 12 through the screw connection with the material feeding frame 12, so as to adjust the distance between the material feeding roller 13 and the working plane 2. The material feeding roller 13 is compatible with hot melt adhesives of different thicknesses and has better applicability.

[0026] Furthermore, based on the above structure, a rubber feeding sleeve 16 is fitted onto the feeding roller 13. Several inclined anti-slip protrusions 161 are formed on the outer surface of the feeding sleeve 16 in a circular array along its axis. The ends of the anti-slip protrusions 161 are inclined towards the feeding frame 12 in the direction of movement towards the cutter holder 10. When the feeding roller 13 feeds the hot melt adhesive, the ends of the anti-slip protrusions 161 contact the hot melt adhesive placed on the working plane 2. The feeding roller 13 drives the feeding sleeve 16 to move towards the cutter holder 10. When the anti-slip protrusion 161 bends outward under the action of friction, it increases the friction between itself and the hot melt adhesive, ensuring that the feeding sleeve 16 moves forward a certain distance with the feeding roller 13 towards the knife holder 10 to achieve feeding. When the feeding roller 13 moves the feeding sleeve 16 away from the knife holder 10 to reset, the anti-slip protrusion 161 bends inward to reduce the friction between itself and the hot melt adhesive, ensuring that the feeding sleeve 16 will not cause the hot melt adhesive to be ejected when it moves away from the knife holder 10 with the feeding roller 13 to reset, thereby ensuring the stability of the hot melt adhesive feeding.

[0027] In addition, based on the above structure, a groove 21 opposite to the cutter 11 is provided on the working plane 2. A feeding plate 17 is inclinedly provided on the support 1 on the side of the groove 21 away from the feeding roller 13. The higher end of the feeding plate 17 is connected to the groove 21. When the cutter 11 moves downward with the cutter holder 10 to cut the hot melt adhesive, the groove 21 allows the lower end of the cutter 11 to penetrate into the groove 21 and completely cut the hot melt adhesive, thereby ensuring the cutting effect. The cut hot melt adhesive segments fall onto the feeding plate 17 and fall down along the feeding plate 17, which facilitates the collection of materials.

[0028] Furthermore, based on the above structure, a plurality of T-shaped sliding rods 18 are mounted on a sliding seat formed on the blade holder 10, which are longitudinally slidable between the cutter 11 and the feeding roller 13. A pressure plate 19 is fixedly connected to the lower end of the sliding rod 18, and a spring 20 is mounted on the sliding rod 18 between the sliding seat and the pressure plate 19. The pressure plate 19 protrudes downward from the lower end of the cutter 11 under the action of the spring 20. When the blade holder 10 moves the cutter 11 downward to cut the hot melt adhesive, the pressure plate 19 moves downward with the blade holder 10 and abuts against the pressure plate 19 between the cutter 11 cutting the hot melt adhesive. As the blade holder 10 continues to move downward, the sliding rods 18 slide on the sliding seat and compress the spring 20, so that the pressure plate 19 is always pressed tightly against the hot melt adhesive. Through the action of the pressure plate 19, the hot melt adhesive is kept stable when the cutter 11 cuts the hot melt adhesive, thereby ensuring the cutting quality.

[0029] Furthermore, based on the above structure, the working plane 2 is provided with several guide plates 22 that are vertically perpendicular to the cutter groove 21 and the feeding roller 13. The hot melt adhesive placed on the working platform passes through the guide channel formed between the two guide plates 22. The guide plates 22 limit the width of the hot melt adhesive, thereby ensuring the accuracy of the hot melt adhesive when it travels on the working plane 2, and thus ensuring the cutting quality. Moreover, the multiple guide channels formed by the multiple guide plates 22 can simultaneously limit and guide multiple hot melt adhesives, so that the cutting device can cut multiple hot melt adhesives at the same time, improving the cutting efficiency.

[0030] Furthermore, based on the above structure, two adjustment grooves 23 parallel to the blade groove 21 are provided on the working plane 2. The bolt pairs on the guide plate 22 are inserted into the adjustment grooves 23 to fasten the guide plate 22 to the bracket 1. By loosening the bolt pairs, the guide plate 22 can move along the adjustment grooves 23 on the working plane 2. The distance between the two guide plates 22 can be adjusted to adapt to hot melt adhesives of different widths, making the cutting device more adaptable.

[0031] The above description is only a preferred embodiment of the present utility model and is not intended to limit the present utility model. Any modifications, equivalent substitutions, improvements, etc., made within the spirit and principles of the present utility model should be included within the protection scope of the present utility model.

Claims

1. An EVA hot melt glue cutting device, comprising a support (1), characterized in that: The support (1) has a working plane (2). A drive shaft (3) is rotatably mounted on the support (1) and is connected to a motor mounted on the support (1). A first eccentric wheel (4) and a second eccentric wheel (5) are eccentrically connected to the drive shaft (3). A first transmission sleeve (6) and a second transmission sleeve (7) are respectively fitted on the first eccentric wheel (4) and the second eccentric wheel (5). A first transmission rod (8) and a second transmission rod are respectively fixedly connected to the first transmission sleeve (6) and the second transmission sleeve (7). (9) The end of the first transmission rod (8) is hinged to the knife holder (10) which is longitudinally slidably disposed on the support (1) above the working plane (2). The knife holder (10) is provided with a cutter (11). The end of the second transmission rod (9) is hinged to the material feeder (12) which is horizontally slidably disposed on the support (1) above the working plane (2). The material feeder (12) is rotatably disposed with a material feeder roller (13). The rotating shaft of the material feeder roller (13) is provided with a one-way ratchet mechanism (14).

2. The EVA hot melt glue cutting device according to claim 1, characterized in that: An adjustment frame (15) is longitudinally slidably provided on the feeding frame (12). An adjustment screw (152) is rotatably provided on the adjustment frame (15) and screwed onto the feeding frame (12). The feeding roller (13) is rotatably provided on the adjustment frame (15).

3. The EVA hot melt glue cutting device according to claim 2, characterized in that: The feeding roller (13) is fitted with a rubber feeding sleeve (16), and a number of inclined anti-slip protrusions (161) are formed on the outer surface of the feeding sleeve (16) in a ring array along the axis of the feeding sleeve (16).

4. The EVA hot melt glue cutting device according to claim 3, characterized in that: The working plane (2) is provided with a groove (21) opposite to the cutter (11). The support (1) is provided with a feeding plate (17) located on the side of the groove (21) away from the feeding roller (13). The higher end of the feeding plate (17) is connected to the groove (21).

5. The EVA hot melt glue cutting device according to claim 1, wherein: The sliding seat (101) formed on the blade holder (10) is provided with a plurality of T-shaped sliding rods (18) that can slide longitudinally between the cutter (11) and the feeding roller (13). The lower end of the sliding rod (18) is fixedly connected to a pressure plate (19). A spring (20) is provided on the sliding rod (18) between the sliding seat (101) and the pressure plate (19). The pressure plate (19) protrudes downward from the lower end of the cutter (11) under the action of the spring (20).

6. The EVA hot melt glue cutting device according to claim 1, characterized in that: The working plane (2) is provided with several guide plates (22) that are vertically positioned between the knife groove (21) and the feeding roller (13) and are perpendicular to the knife groove (21).

7. The EVA hot melt glue cutting device according to claim 6, characterized in that: Two adjustment grooves (23) parallel to the knife groove (21) are provided on the working plane (2). The bolt pair provided on the guide plate (22) is inserted into the adjustment groove (23) to achieve the fastening of the guide plate (22) and the bracket (1).

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