Coating die head of hot melt adhesive coating machine

Abstract

The utility model discloses a coating die head of a hot melt adhesive coating machine. The coating die head comprises a coating die head body for the hot melt adhesive coating machine and an adjusting assembly, the coating die head body comprises an upper die body, a lower die body and a deformation groove; the upper die body and the lower die body are clamped; a deformation groove is formed in the bottom surface of the lower die body; the adjusting assembly is arranged on the lower die body; the adjusting assembly comprises a round hole groove, a containing groove, a servo motor, a movable block, an extrusion block and a pressed block. A circular hole groove is formed in the deformation groove; an accommodating groove is formed in the circular hole groove; the servo motor is fixedly arranged on the lower die body through a motor base. The movable block is fixedly connected with the output end of the servo motor; the multiple extrusion blocks are fixedly arranged on the side, close to the circular hole groove, of the movable block in an annular array. The multiple pressed blocks are arranged on the inner wall of the side, close to the circular hole groove, of the containing groove in an annular array mode. The coating die head of the hot melt adhesive coating machine is simple and reasonable in structure and ingenious in design, and compared with a manual operation mode, the coating die head has the advantages of being controllable in adjustment stroke, easy to operate and the like.

Description

Technical Field

[0001] This utility model relates to the technical field of hot melt adhesive coating machines, specifically to a coating die head for a hot melt adhesive coating machine. Background Technology

[0002] A hot melt adhesive coating machine is an electromechanical device that melts solid hot melt adhesive and conveys the molten adhesive to a coating device through a pressurizing device to coat the substrate. It has precise temperature control, fluid pressurization and conveying and extrusion coating functions, and can automatically control and track the production line speed.

[0003] For example, Chinese utility model patent CN219043442U discloses a coating die head for a hot melt adhesive coating machine, including an upper die head and a lower die head, as well as an adhesive supply groove and a sealing shaft. The adhesive supply groove is correspondingly provided on the contact surface of the upper and lower die heads, and a gasket is provided between the upper and lower die heads and above the adhesive supply groove. A sealing piece is vertically provided below the head end of the sealing shaft, and the head end of the sealing shaft is detachably inserted between the two ends of the adhesive supply groove. This application allows adjustment of the adhesive dispensing length of the coating die head according to the width of the substrate to be coated, avoiding adhesive waste and preventing adhesive from being sprayed onto other objects, thus avoiding subsequent cleaning difficulties.

[0004] Currently, the coating dies used in hot melt adhesive coating machines on the market are affected by factors such as the temperature or viscosity of the slurry, resulting in uneven coating thickness. Existing methods usually involve setting push rods or pull rods on the upper or lower die head of the coating die, and adjusting the deformation of the lip through manual operation to regulate the flow rate of the coating die slit. The whole process is cumbersome and depends on the operator's skill level, which can easily affect the quality of adjusting the coating slurry thickness. Utility Model Content

[0005] The purpose of this invention is to address the shortcomings of existing technologies by providing a coating die head for a hot melt adhesive coating machine, thereby ensuring the quality of coating adjustment.

[0006] To achieve the above objectives, this utility model provides the following technical solution: a coating die head for a hot melt adhesive coating machine, comprising a coating die head body and an adjustment assembly; the coating die head body includes an upper die body, a lower die body, and a deformation groove; the upper die body and the lower die body are clamped together; a deformation groove is formed on the bottom surface of the lower die body; the adjustment assembly is arranged on the lower die body; the adjustment assembly includes a circular hole groove, a receiving groove, a servo motor, a movable block, an extrusion block, and a pressure block; at least one circular hole groove is formed in the deformation groove; a receiving groove is formed in the circular hole groove; at least one servo motor is fixed to the lower die body via a motor base, and the output end of the servo motor extends through the lower die body and the circular hole groove into the receiving groove; the movable block is fixedly connected to the output end of the servo motor; a plurality of extrusion blocks are arranged in a ring array and fixed on the side of the movable block near the circular hole groove; a plurality of pressure blocks are arranged in a ring array and fixed on the inner wall of the receiving groove near the circular hole groove.

[0007] Preferably, a material passage gap is formed between the upper mold body and the lower mold body, and the upper mold lip of the upper mold body and the lower mold lip of the lower mold body form a lip opening.

[0008] Preferably, there is a gap between the circular slot and the output end of the servo motor, and the diameter of the receiving slot is larger than the diameter of the movable block.

[0009] Preferably, both the extrusion block and the pressure block are arc-shaped structures. The extrusion block is provided with an inclined surface A, and the pressure block is provided with an inclined surface B. The inclined surfaces A and B are in sliding contact.

[0010] Preferably, it also includes a guide component; the guide component is arranged on the output shaft of the servo motor.

[0011] Preferably, the guiding component includes a fixed block, a guide groove, and a guide block; the fixed block is sleeved on the output shaft of the servo motor; the guide groove is provided in the deformation groove; the guide block is slidably disposed in the guide groove, and the end of the guide block passes through the guide groove and is fixedly connected to the fixed block.

[0012] Preferably, the guide groove is an arc-shaped groove, and the arc of the guide groove is smaller than the arc of the extrusion block and the pressure block.

[0013] Compared with the prior art, the beneficial effects of this utility model are:

[0014] 1. This utility model, by setting an adjustment component, starts a servo motor, causing the output shaft of the servo motor to rotate, which in turn causes the moving block to drive the extrusion block to rotate. This causes the inclined surface A on the extrusion block to press against the inclined surface B on the pressure block, causing the lower die lip of the lower die body to deform. This increases the size of the lip formed by the upper die lip of the upper die body and the lower die lip of the lower die body, thereby achieving lip adjustment. Compared with the prior art, this utility model has a simple and reasonable structure, ingenious design, and advantages such as controllable adjustment stroke and simple operation.

[0015] 2. By setting a guide component, when the output shaft of the servo motor rotates, the fixed block will rotate, causing the guide block to slide from one inner wall of the guide groove to the other inner wall of the guide groove until the guide block slides to the other inner wall of the guide groove. At this time, the lip formed by the upper mold lip of the upper mold body and the lower mold lip of the lower mold body is deformed to the maximum extent, so as to facilitate the control of the deformation of the lip and thus improve the practicality of this utility model. Attached Figure Description

[0016] Figure 1 This is a schematic diagram of the overall structure of this utility model;

[0017] Figure 2 This is a cross-sectional view of the overall structure of this utility model;

[0018] Figure 3 This is a cross-sectional view of the coating die head body of this utility model;

[0019] Figure 4 This is a partial structural breakdown diagram of the present invention;

[0020] Figure 5 For the present utility model Figure 2 Enlarged diagram of point A in the middle.

[0021] In the picture:

[0022] 1. Coating die head body; 2. Adjustment assembly; 3. Guide assembly;

[0023] 101. Upper mold body; 102. Lower mold body; 103. Deformation groove;

[0024] 201. Circular hole groove; 202. Receiving groove; 203. Servo motor; 204. Movable block; 205. Pressing block; 206. Pressure block;

[0025] 301. Fixing block; 302. Guide groove; 303. Guide block. Detailed Implementation

[0026] The technical solutions of the present utility model will be clearly and completely described below with reference to the accompanying drawings of the embodiments. Obviously, the described embodiments are only some embodiments of the present utility model, and not all embodiments. Based on the embodiments of the present utility model, all other embodiments obtained by those of ordinary skill in the art without creative effort are within the protection scope of the present utility model.

[0027] Please see Figures 1 to 5 This utility model provides a technical solution: a coating die head for a hot melt adhesive coating machine, comprising a coating die head body 1 and an adjustment component 2; the coating die head body 1 includes an upper die body 101, a lower die body 102, and a deformation groove 103; the upper die body 101 and the lower die body 102 are clamped together; a material passage gap is formed between the upper die body 101 and the lower die body 102, and the upper die lip of the upper die body 101 and the lower die lip of the lower die body 102 form a lip; a deformation groove 103 is provided on the bottom surface of the lower die body 102; the adjustment component 2 is arranged on the lower die body 102; the adjustment component 2 includes a circular hole groove 201, a receiving groove 202, a servo motor 203, a movable block 204, an extrusion block 205, and a pressure block 206; a circular hole groove 201 is provided in the deformation groove 103; a receiving groove 202 is provided in the circular hole groove 201. The servo motor 203 is fixed to the lower mold body 102 via a motor mount, and the output end of the servo motor 203 extends through the lower mold body 102 and the circular slot 201 into the receiving slot 202; the movable block 204 is fixedly connected to the output end of the servo motor 203; three extrusion blocks 205 are fixedly arranged in a ring array on the side of the movable block 204 near the circular slot 201; three pressure blocks 206 are fixedly arranged in a ring array on the inner wall of the receiving slot 202 near the circular slot 201; there is a gap between the circular slot 201 and the output end of the servo motor 203, and the diameter of the receiving slot 202 is larger than the diameter of the movable block 204 to allow sufficient space for the lip to deform; both the extrusion block 205 and the pressure block 206 are arc-shaped structures, with an inclined surface A on the extrusion block 205 and an inclined surface B on the pressure block 206, and the inclined surfaces A and B are in sliding contact.

[0028] This invention, by setting an adjustment component 2, starts the servo motor 203, causing the output shaft of the servo motor 203 to rotate. This causes the movable block 204 to drive the extrusion block 205 to rotate, causing the inclined surface A on the extrusion block 205 to press the inclined surface B on the pressure block 206. This causes the lower die lip of the lower die body 102 to deform, increasing the size of the lip formed by the upper die lip of the upper die body 101 and the lower die lip of the lower die body 102, thereby achieving lip adjustment. Compared with the prior art, this invention has a simple and reasonable structure, ingenious design, and advantages such as controllable adjustment stroke and simple operation.

[0029] As a preferred embodiment, it also includes a guide component 3; the guide component 3 is arranged on the output shaft of the servo motor 203; the guide component 3 includes a fixed block 301, a guide groove 302 and a guide block 303; the fixed block 301 is sleeved on the output shaft of the servo motor 203; the guide groove 302 is provided in the deformation groove 103; the guide block 303 is slidably disposed in the guide groove 302, and the end of the guide block 303 passes through the guide groove 302 and is fixedly connected to the fixed block 301; the guide groove 302 is an arc-shaped groove, and the arc of the guide groove 302 is smaller than the arc of the extrusion block 205 and the pressure block 206; when the guide block 303 slides to the inner wall of the guide groove 302, the inclined surface A on the extrusion block 205 is still in contact with the inclined surface B on the pressure block 206, and the inside of the circular hole groove 201 is not in contact with the output end of the servo motor 203, and the circumferential surface of the movable block 204 is not in contact with the inner wall of the receiving groove 202.

[0030] By setting a guide component 3, when the output shaft of the servo motor 203 rotates, the fixed block 301 will rotate, causing the guide block 303 to slide from one side of the inner wall of the guide groove 302 to the other side of the inner wall of the guide groove 302 until the guide block 303 slides to the other side of the inner wall of the guide groove 302. At this time, the lip formed by the upper mold lip of the upper mold body 101 and the lower mold lip of the lower mold body 102 is deformed to the maximum extent, so as to facilitate the control of the deformation of the lip and thus improve the practicality of the present invention.

[0031] Working principle: When in use, the servo motor 203 is started, causing the output shaft of the servo motor 203 to rotate. This causes the movable block 204 to drive the extrusion block 205 to rotate, causing the inclined surface A on the extrusion block 205 to press the inclined surface B on the pressure block 206. This causes the lower die lip of the lower die body 102 to deform, increasing the lip size formed by the upper die lip of the upper die body 101 and the lower die lip of the lower die body 102. This allows for lip adjustment. When the output shaft of the servo motor 203 rotates, the fixed block 301 rotates, causing the guide block 303 to slide from one side of the inner wall of the guide groove 302 to the other side of the inner wall of the guide groove 302 until the guide block 303 slides to the other side of the inner wall of the guide groove 302. At this point, the lip formed by the upper die lip of the upper die body 101 and the lower die lip of the lower die body 102 deforms to its maximum extent.

[0032] The above is the entire working process of the device, and all contents not described in detail in this specification are existing technologies known to those skilled in the art.

[0033] Although embodiments of the present invention have been shown and described, it will be understood by those skilled in the art that various changes, modifications, substitutions and alterations can be made to these embodiments without departing from the principles and spirit of the present invention, the scope of which is defined by the appended claims and their equivalents.

Claims

1. A coating die of a hot melt adhesive coater, characterized by, The application relates to a coating die body (1) and an adjusting assembly (2) for a hot melt adhesive coating machine; the coating die body (1) comprises an upper die body (101), a lower die body (102) and a deformation groove (103); the upper die body (101) and the lower die body (102) are clamped together; the lower die body (102) is provided with the deformation groove (103) on the bottom surface; the adjusting assembly (2) is arranged on the lower die body (102); the adjusting assembly (2) comprises a circular hole groove (201), a containing groove (202), a servo motor (203), a movable block (204), an extrusion block (205) and a pressure receiving block (206); at least one circular hole groove (201) is arranged in the deformation groove (103); the containing groove (202) is arranged in the circular hole groove (201); at least one servo motor (203) is fixedly arranged on the lower die body (102) through a motor base, and the output end of the servo motor (203) extends into the containing groove (202) through the lower die body (102) and the circular hole groove (201); the movable block (204) is fixedly connected with the output end of the servo motor (203); a plurality of extrusion blocks (205) are annularly arranged on one side of the movable block (204) close to the circular hole groove (201); a plurality of pressure receiving blocks (206) are annularly arranged on the inner wall of the containing groove (202) close to the circular hole groove (201).

2. The coating die of a hot melt adhesive applicator according to claim 1, wherein The upper die body (101) and the lower die body (102) are provided with a material passing gap, and the upper die lip of the upper die body (101) and the lower die lip of the lower die body (102) form a lip.

3. The coating die of claim 1, wherein A gap exists between the circular hole groove (201) and the output end of the servo motor (203), and the diameter size of the containing groove (202) is larger than the diameter size of the movable block (204).

4. The coating die of claim 1, wherein The extrusion block (205) and the pressure receiving block (206) are both arc-shaped structures, the extrusion block (205) is provided with an inclined surface A, the pressure receiving block (206) is provided with an inclined surface B, and the inclined surface A and the inclined surface B are in sliding contact.

5. The coating die of claim 3, wherein The application further relates to a guide assembly (3); the guide assembly (3) is arranged on the output shaft of the servo motor (203).

6. The coating die of a hot melt adhesive applicator according to claim 5, wherein The guide assembly (3) comprises a fixed block (301), a guide groove (302) and a guide block (303); the fixed block (301) is sleeved on the output shaft of the servo motor (203); the guide groove (302) is arranged in the deformation groove (103); the guide block (303) is slidingly arranged in the guide groove (302), and the end portion of the guide block (303) is fixedly connected with the fixed block (301) through the guide groove (302).

7. The coating die of a hot melt adhesive applicator according to claim 6, wherein The guide groove (302) is an arc-shaped groove, and the curvature of the guide groove (302) is smaller than the curvature of the extrusion block (205) and the pressure receiving block (206).

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