A fully automatic hot melt glue machine

Abstract

The utility model relates to a full -automatic hot melt glue machine belongs to hot melt glue machine technical field, this full -automatic hot melt glue machine, include: hot melt glue machine body and support block, the upper side of hot melt glue machine body is equipped with glue coating push rod and press down push rod, press down push rod is located glue coating push rod level one side, support block sets up hot melt glue machine body and is located glue coating push rod and press down push rod below, the inside activity of support block is equipped with support ring, the below of support ring is equipped with support subassembly, support travel covers full workstation, the inclined cambered surface structure of support ring perfect match hemispheroid curved surface, eliminate the risk of misplacement of glue coating and press down, yield rate promotion, the multistage spring buffer device of support subassembly and bottom rubber shock -absorbing layer form gradual support, ensure that press down pressure is evenly distributed, avoid the excessive compression of glue layer or shell stress concentration, make bonding strength promote, the ball breakage rate reduces.

Description

Technical Field

[0001] This utility model relates to the field of hot melt adhesive machine technology, and in particular to a fully automatic hot melt adhesive machine. Background Technology

[0002] A hot melt adhesive machine is a support device for spraying, scraping, rolling, coating, and injecting hot melt adhesive. It is widely used in household products and can improve people's efficiency. With the continuous development of technology, people's requirements for the manufacturing process of hot melt adhesive machines are also getting higher and higher.

[0003] After completing the melting and dispensing operations, existing hot melt adhesive machines require axial compression of two hemispheres through a pressure mechanism to achieve bonding. However, when the extrusion pressure output by the electric actuator exceeds the critical value, it will lead to excessive compression of the adhesive layer, resulting in a decrease in the bonding density between the melt molecular chains, which directly affects the bonding strength. On the other hand, excessive mechanical stress will cause instability of the hemisphere shell structure, resulting in stress concentration in the contact area, which will eventually cause cracking or structural damage to the surface of the sphere, significantly reducing the product yield. Utility Model Content

[0004] Based on this, it is necessary to provide a fully automatic hot melt adhesive machine to address the problem that when the extrusion pressure output by the electric actuator exceeds the critical value, on the one hand, it will cause excessive compression of the adhesive layer, resulting in a decrease in the bonding density between the melt molecular chains, which directly affects the bonding strength; on the other hand, excessive mechanical stress will cause instability of the hemispherical shell structure, resulting in stress concentration in the contact area, which will eventually cause cracking or structural damage to the sphere surface.

[0005] A fully automatic hot melt adhesive machine includes: a hot melt adhesive machine body, with an adhesive application push rod and a pressing push rod provided above the hot melt adhesive machine body, the pressing push rod being located on the horizontal side of the adhesive application push rod; A support block is provided on the body of the hot melt glue machine and located below the glue application push rod and the pressing push rod. A support ring is movably provided inside the support block, and a support assembly is provided below the support ring.

[0006] In one embodiment, a base plate is fixedly connected to the lower part of the hot melt glue machine body, and the base plate is located below the support block.

[0007] In one embodiment, a guide rail is fixedly connected above the base plate, and a support is slidably provided above the guide rail. The support is fixedly connected above the support block below, and the support block slides below the glue-applying push rod and the pressing push rod.

[0008] In one embodiment, fixing blocks are fixedly fitted on both sides of the guide rail, and the two fixing blocks are fixedly connected to the top of the base plate.

[0009] In one embodiment, an electric push rod is fixedly connected to the upper side surface of the base plate. The output direction of the electric push rod is at the same horizontal line as the guide rail, and the output end of the electric push rod is fixedly connected to the outer wall of one side of the support.

[0010] In one embodiment, a square groove is provided on one side of the support block, and the support ring is located above one side of the square groove.

[0011] In one embodiment, the support assembly includes a housing disposed inside the support block, and a plurality of support telescopic columns are fixedly disposed inside the housing. The top ends of the plurality of support telescopic columns are fixedly connected to lifting blocks, and the upper part of the lifting blocks is embedded below the support ring through a plurality of cylinders.

[0012] In one embodiment, a limiting ring is fixedly connected to the four sides of the lifting block, and the limiting ring slides on the inner wall of the housing. Beneficial effects

[0013] 1. The support stroke covers the entire worktable surface. The inclined arc structure of the support ring perfectly matches the hemispherical surface, eliminating the risk of misalignment during glue application and pressing, thus improving the yield rate. The multi-level spring buffer device of the support component and the bottom rubber shock-absorbing layer form a progressive support, ensuring that the pressing pressure is evenly distributed, avoiding excessive compression of the glue layer or stress concentration in the shell, thereby improving the bonding strength and reducing the sphere breakage rate.

[0014] 2. The cylinder with the support ring embedded at the top of the lifting block adopts a conical positioning design, which ensures power transmission efficiency and reduces wear during movement. The surface of the limiting ring and the inner wall of the outer shell form a self-lubricating structure to ensure constant sliding resistance. Multiple cylinders are equipped with magnetic blocks at their tops. When the equipment is in standby mode, the magnetic blocks can attract and fix the support ring to prevent accidental displacement. This multi-level buffering and dynamic adjustment mechanism makes the contact pressure when the ball is bonded more stable, significantly improving the product qualification rate. Attached Figure Description

[0015] To more clearly illustrate the technical solutions in 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 some embodiments of this utility model. For those skilled in the art, other drawings can be obtained from these drawings without creative effort.

[0016] Figure 1 This is a schematic diagram of the overall structure of this utility model; Figure 2 This is a schematic diagram of the downward push rod structure of this utility model; Figure 3This is a schematic diagram of the support block structure of this utility model; Figure 4 This is a schematic diagram of the support ring structure of this utility model; Figure 5 This is an enlarged view of the structure of the support component of this utility model.

[0017] Figure label: 100. Hot melt glue machine body; 101. Glue application push rod; 102. Pressing push rod; 103. Base plate; 200. Support block; 201. Guide rail; 202. Fixing block; 203. Support; 204. Support ring; 205. Electric push rod; 206. Square channel; 300. Support assembly; 301. Housing; 302. Lifting block; 303. Limiting ring; 304. Support telescopic column. Detailed Implementation

[0018] 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, not all, of the embodiments of this utility model. All other embodiments obtained by those skilled in the art based on the embodiments of this utility model without creative effort are within the scope of protection of this utility model.

[0019] The following is combined Figure 1 - Figure 5 This invention describes a fully automatic hot melt adhesive machine.

[0020] In one embodiment, a fully automatic hot melt adhesive machine includes: a hot melt adhesive machine body 100 and a support block 200. A glue application push rod 101 and a pressing push rod 102 are provided above the hot melt adhesive machine body 100. The pressing push rod 102 is located on the horizontal side of the glue application push rod 101. The support block 200 is provided on the hot melt adhesive machine body 100 and below the glue application push rod 101 and the pressing push rod 102. A support ring 204 is movably provided inside the support block 200. A support assembly 300 is provided below the support ring 204. It should be noted that the top of the hot melt glue machine body 100 has a horizontally arranged glue application push rod 101 and a pressing push rod 102. The glue application push rod 101 has a built-in precision temperature control system, which melts the solid glue strip into a liquid state through a ceramic heating element. It works in conjunction with a spiral feeding structure driven by a stepper motor to achieve quantitative glue dispensing. The pressing push rod 102 adopts a double guide rod cylinder structure and is arranged vertically with the glue application push rod 101. Both the glue application push rod 101 and the pressing push rod 102 are relatively mature products in the existing technology. The appropriate model can be selected according to the actual use. In this embodiment, the support block 200 is disposed on the worktable of the hot melt glue machine body 100. A support ring 204 is movably installed inside the support block 200. The surface of the support ring 204 is covered with a Teflon coating. An arc groove is opened inside the support block 200. The upper surface of the support ring 204 is an inclined surface, so that the surface of the support ring 204 matches the inside of the arc groove of the support block 200, which is suitable for the surface of the hemispherical workpiece. The support assembly 300 consists of a multi-stage spring buffer device, including a rubber shock-absorbing layer at the bottom of the support assembly 300, forming a progressive support structure. When the ball is placed in, the ball is centered by gravity sensing. The support assembly 300 dynamically adjusts its stiffness according to the weight of the workpiece to ensure that the pressure is evenly distributed during the pressing process, effectively preventing the shell from cracking due to local stress concentration.

[0021] like Figure 1 , Figure 2 and Figure 3 As shown, a base plate 103 is fixedly connected to the bottom of the hot melt glue machine body 100. The base plate 103 is located below the support block 200. A guide rail 201 is fixedly connected to the top of the base plate 103. A support 203 is slidably provided above the guide rail 201. The top of the support 203 is fixedly connected to the bottom of the support block 200. The support block 200 is located below the glue application push rod 101 and the pressing push rod 102. In this embodiment, the guide rail 201 is a linear slide rail with built-in ball bearings, which, together with the dovetail groove structure of the support 203, enables the horizontal sliding of the support block 200. The stroke range of the support 203 covers the entire effective area of ​​the worktable of the hot melt glue machine body 100. The bottom of the support block 200 is rigidly connected to the support 203 by bolts. The sliding path of the support block 200 is precisely aligned with the operating axes of the glue application push rod 101 and the pressing push rod 102 to ensure that the glue application trajectory and the pressing point are precisely coincident. Position sensors are provided at both ends of the guide rail 201. When the support 203 triggers the travel limit, the equipment automatically stops running and alarms, effectively avoiding the risk of mechanical collision.

[0022] like Figure 2 , Figure 3 and Figure 4 As shown, fixing blocks 202 are fixedly fitted on both sides of the guide rail 201. The two fixing blocks 202 are fixedly connected to the bottom plate 103. An electric push rod 205 is fixedly connected to one side of the top of the bottom plate 103. The output direction of the electric push rod 205 is at the same horizontal line as the guide rail 201. One side of the output end of the electric push rod 205 is fixedly connected to the outer wall of one side of the support 203. A square groove 206 is opened on one side of the support block 200. The support ring 204 is located above one side of the square groove 206. In this embodiment, the contact surface between the fixed block 202 and the guide rail 201 is made by wire cutting to ensure the fitting accuracy. The electric push rod 205 is a servo electric cylinder with a built-in high-precision ball screw, which has good repeatability. The output end of the electric push rod 205 is connected to the support 203 through a flexible coupling, which effectively eliminates the vibration caused by assembly error. The square groove 206 on the side of the support block 200 is designed with a U-shaped opening structure. The depth of the square groove 206 extends to below the mounting position of the support ring 204, which facilitates the quick assembly and disassembly of the support ring 204 and forms a channel for guiding the adhesive, avoiding the accumulation of excess adhesive. When the electric push rod 205 drives the support 203 to move, the amount of adhesive dispensed by the adhesive push rod 101 and the squeezing force of the pressing push rod 102 form a closed-loop control to ensure that the support ring 204 is always in the optimal working position.

[0023] like Figure 2 , Figure 4 and Figure 5 As shown, the support assembly 300 includes a housing 301 disposed inside the support block 200. Multiple support telescopic columns 304 are fixedly disposed inside the housing 301. Lifting blocks 302 are fixedly connected to the top of the multiple support telescopic columns 304. Multiple cylinders are embedded below the support ring 204 above the lifting block 302. Limiting rings 303 are fixedly connected to the four sides of the lifting block 302. The limiting rings 303 slide on the inner wall of the housing 301. In this embodiment, the inner wall of the outer shell 301 is precision ground and the gap between it and the limiting ring 303 is small, ensuring the stability of the vertical movement of the lifting block 302. It should be noted that the support telescopic column 304 adopts a multi-stage composite spring structure, consisting of a hard stainless steel spring, a soft silicone buffer layer, and an air spring cavity from top to bottom, forming a support system with gradually changing stiffness. The support telescopic column 304 is a relatively mature product in the existing technology. Choose the appropriate model according to actual needs. The cylinder of the support ring 204 embedded at the top of the lifting block 302 adopts a conical positioning design, which ensures power transmission efficiency and reduces wear during movement. The surface of the limiting ring 303 and the inner wall of the outer shell 301 form a self-lubricating structure to ensure constant sliding resistance. Multiple cylinders are equipped with magnetic blocks at their tops. When the equipment is in standby mode, the magnetic blocks can attract and fix the support ring 204 to prevent accidental displacement. This multi-level buffering and dynamic adjustment mechanism makes the contact pressure when the ball is bonded more stable, significantly improving the product qualification rate.

[0024] Working principle: The hot melt glue machine body 100 works in coordination with the horizontally arranged top glue-applying push rod 101 and the downward push rod 102. The glue-applying push rod 101 melts the solid glue strip into a liquid state and dispenses the glue quantitatively onto the surface of the hemisphere. The downward push rod 102 applies extrusion force to the sphere in a vertical arrangement. The support block 200 slides horizontally with the support 203 via the guide rail 201 on the base plate 103. The stroke of the support 203 is driven by the electric push rod 205 and is precisely aligned with the operating axis of the glue-applying push rod 101 and the downward push rod 102. The support ring 204 is embedded in the arc-shaped groove of the support block 200, and its surface is adapted to the hemispherical curved surface. Inside the outer shell 301 of the lower support component 300, the lifting block 302 achieves vertical buffering through the multi-stage support telescopic column 304 and the limiting ring 303. The bottom rubber shock-absorbing layer forms progressive support. When the ball is placed, the gravity sensor centers and triggers the support component 300 to dynamically adjust its stiffness, ensuring that the downward pressure is evenly distributed. Combined with magnetic fixation and multi-stage buffering design, the shell structure instability during the ball contact process is reduced, and the safety of product manufacturing is improved.

[0025] It should be noted that the hot melt glue machine body 100, glue application push rod 101, pressure push rod 102, and electric push rod 205 mentioned above are all components with relatively mature existing technology. The specific model can be selected according to actual needs. At the same time, the hot melt glue machine body 100, glue application push rod 101, pressure push rod 102, and electric push rod 205 can be powered by the built-in power supply or by AC power. The specific power supply method is selected according to the situation and will not be elaborated here.

[0026] The above embodiments are only used to illustrate the technical solutions of this utility model, and are not intended to limit it. Although this utility model has been described in detail with reference to the foregoing embodiments, those skilled in the art should understand that modifications can still be made to the technical solutions described in the foregoing embodiments, or equivalent substitutions can be made to some of the technical features. Such modifications or substitutions will not cause the essence of the corresponding technical solutions to deviate from the spirit and scope of the technical solutions of the embodiments of this utility model.

Claims

1. A fully automatic hot melt adhesive machine, characterized in that, include: A hot melt glue machine body (100) is provided with a glue application push rod (101) and a pressing push rod (102) above the hot melt glue machine body (100), and the pressing push rod (102) is located on the horizontal side of the glue application push rod (101); A support block (200) is provided on the hot melt glue machine body (100) and located below the glue application push rod (101) and the pressing push rod (102). A support ring (204) is movably provided inside the support block (200), and a support assembly (300) is provided below the support ring (204).

2. The fully automatic hot melt adhesive machine according to claim 1, characterized in that, A base plate (103) is fixedly connected to the bottom of the hot melt glue machine body (100), and the base plate (103) is located below the support block (200).

3. The fully automatic hot melt adhesive machine according to claim 2, characterized in that, A guide rail (201) is fixedly connected above the base plate (103), and a support (203) is slidably provided above the guide rail (201). The support (203) is fixedly connected above the support block (200) below, and the support block (200) slides below the glue-applying push rod (101) and the pressing push rod (102).

4. The fully automatic hot melt adhesive machine according to claim 3, characterized in that, Fixing blocks (202) are fixedly fitted on both sides of the guide rail (201), and the two fixing blocks (202) are fixedly connected to the bottom plate (103) above.

5. The fully automatic hot melt adhesive machine according to claim 4, characterized in that, An electric push rod (205) is fixedly connected to one side of the upper surface of the base plate (103). The output direction of the electric push rod (205) is at the same horizontal line as the guide rail (201). One side output end of the electric push rod (205) is fixedly connected to one side outer wall of the support (203).

6. The fully automatic hot melt adhesive machine according to claim 4, characterized in that, A square groove (206) is provided on one side of the support block (200), and the support ring (204) is located above the square groove (206).

7. The fully automatic hot melt adhesive machine according to claim 1, characterized in that, The support assembly (300) includes a housing (301) disposed inside the support block (200). Multiple support telescopic columns (304) are fixedly disposed inside the housing (301). A lifting block (302) is fixedly connected to the top of the multiple support telescopic columns (304). Multiple cylinders are embedded below the support ring (204) above the lifting block (302).

8. The fully automatic hot melt adhesive machine according to claim 7, characterized in that, A limiting ring (303) is fixedly connected to the four sides of the lifting block (302), and the limiting ring (303) slides on the inner wall of the outer shell (301).

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