Heating plate structure of pressure plate type hot melt glue machine

Abstract

The utility model relates to a heating plate structure of a pressure plate type hot melt glue machine, which comprises a heating plate body and a connecting plate, the heating plate body and the connecting plate are fixedly connected together, a sealing groove is formed between the heating plate body and the connecting plate, the sealing groove extends on the heating plate along the circumferential direction, and the sealing groove is communicated with the heating plate body. The sealing groove is matched with a sealing ring, and the sealing ring is embedded into the sealing groove; a first glue outlet through hole is formed in the connecting disc, and the first glue outlet through hole penetrates through the connecting disc; a second glue outlet through hole is formed in the heating disc body, the second glue outlet through hole penetrates through the heating disc body, and the second glue outlet through hole is in fluid communication with the first glue outlet through hole in the connecting disc; when the heating disc extends into a glue barrel, the heating disc body extrudes glue in the glue barrel and melts the glue, and the melted glue enters the second glue outlet through hole and flows into the first glue outlet through hole from the second glue outlet through hole.

Description

TECHNICAL FIELD

[0001] The utility model relates to hot melt glue machine field, concretely relates to a heating disc structure of platen hot melt glue machine. BACKGROUND

[0002] The platen hot melt glue machine is widely applied, and most of the platen hot melt glue machines on the market currently all include a heating disc and a driving mechanism, the driving mechanism drives the heating disc to ascend and descend, the heating disc extends into a glue barrel, glue in the glue barrel is bonded to the outer surface of the heating disc, the heating disc heats the glue on the outer surface into a liquid state, and the glue on the outer surface of the heating disc is discharged through the principle of pump suction.

[0003] A platen structure of a PUR hot melt glue machine is disclosed in a Chinese utility model patent with the application number CN202220125799.7, which comprises a machine body and a heating device, the upper surface of the machine body is fixedly connected with a support frame, the surface of the support frame is fixedly installed with a driver, the surface of the driver is provided with the heating device, the heating device comprises a gear box, the upper surface of the gear box and the bottom end of the driver are fixedly installed, the bottom end of the gear box is fixedly connected with a connecting block, the bottom end of the connecting block is fixedly connected with a heating disc, the bottom end of the heating disc is provided with a plurality of circular grooves, the surface of the heating disc and the driver is provided with a collecting device, the collecting device comprises an exhaust pipe, the exhaust pipe is communicated with the surface of the heating disc, the surface of the exhaust pipe is communicated with a connecting pipe, the end of the connecting pipe away from the exhaust pipe is communicated with the bottom end of the driver. A plurality of circular grooves are provided on the heating disc in the patent, the plurality of circular grooves are evenly distributed on the heating disc according to the circumference of the heating disc, and the molten glue heated by the heating disc when pressing down the glue barrel is discharged through the circular grooves, but since the cross-sectional areas of the circular grooves are consistent, and the circular grooves enclose glue through holes, the glue discharge is not smooth and fast, and the glue discharge speed is slow when the heating disc presses down the glue barrel. SUMMARY

[0004] The utility model aims at solving the shortcomings in the prior art and provides a heating disc structure of a platen hot melt glue machine.

[0005] In order to achieve the above object, the utility model discloses a heating disc structure of hot melt adhesive machine of pressure plate type, comprising: heating disc body, connecting disc, the heating disc body with the connecting disc fixed connection together, and the heating disc body with the connecting disc form a sealed recess, the sealed recess extends along the circumference on the heating disc, the sealed recess is adapted with sealing ring, and sealing ring is embedded in the sealed recess, so that when the heating disc is inserted into the glue barrel, sealing ring and glue barrel form sealing, avoid extruding the glue in the glue barrel from the gap between the heating disc and glue barrel overflow when, the first glue outlet through -hole is provided on the connecting disc, and the first glue outlet through -hole is through the connecting disc, the second glue outlet through -hole is provided on the heating disc body, and the second glue outlet through -hole is through the heating disc body, and the second glue outlet through -hole with the first glue outlet through -hole on the connecting disc is in fluid communication, when the heating disc is inserted into the glue barrel, the heating disc body extrudes the glue in the glue barrel and melts the glue, and the melted glue enters the second glue outlet through -hole and flows into the first glue outlet through -hole from the second glue outlet through -hole.

[0006] Preferably, the heating disc body is provided with a groove, the groove is recessed inward along the direction of the axis from the outer surface of the heating disc body by a predetermined depth, the groove has a bottom wall, a predetermined number of first long strip-shaped protrusions and a predetermined number of second long strip-shaped protrusions are arranged on the bottom wall, the first long strip-shaped protrusions are upwardly protruded from the bottom wall by a predetermined height, and the first long strip-shaped protrusions are fixedly connected to the bottom wall of the heating disc body, the second long strip-shaped protrusions are upwardly protruded from the bottom wall by a predetermined height, and the second long strip-shaped protrusions are fixedly connected to the bottom wall of the heating disc body, a first glue flow channel is formed between the first long strip-shaped protrusions and the second long strip-shaped protrusions, and the first glue flow channel is in fluid communication with the second glue outlet through -hole, so that the glue in the molten state flows into the second glue outlet through -hole through the first glue flow channel.

[0007] Preferably, the first glue flow channel has a first glue flow opening and a second glue flow opening, the first glue flow opening and the second glue flow opening are in fluid communication, and the opening equivalent diameter of the first glue flow opening is smaller than the opening equivalent diameter of the second glue flow opening, so that when the heating disc extrudes the glue barrel, the pressure of the glue at the second glue flow opening gradually increases when the glue is extruded to the first glue flow opening, the glue is ejected from the first glue flow opening, and the speed of the glue flow is accelerated.

[0008] Preferably, the heating plate body is further provided with a preset number of third elongated protrusions, the third elongated protrusions are provided on the bottom wall, the third elongated protrusions protrude upward from the bottom wall to a preset height, and the third elongated protrusions are fixedly connected to the bottom wall; one end of the preset number of third elongated protrusions converges to form a collection part, and the second glue outlet is close to the collection part.

[0009] Preferably, a second glue flow channel is formed between the third elongated protrusion and the first elongated protrusion, and the second glue flow channel is in fluid communication with the second glue outlet hole, so that the molten glue flows into the second glue outlet hole through the second glue flow channel.

[0010] Preferably, the second adhesive flow channel has a third adhesive flow opening and a fourth adhesive flow opening, which are in fluid communication. The equivalent diameter of the third adhesive flow opening is smaller than that of the fourth adhesive flow opening. This allows the adhesive at the fourth adhesive flow opening to be squeezed into the adhesive container at a gradually increasing pressure as it reaches the third adhesive flow opening, causing the adhesive to be ejected from the third adhesive flow opening and accelerating the flow rate of the adhesive.

[0011] Preferably, a preset number of baffles are also provided on the heating plate body. The baffles are fixedly provided on the bottom wall and protrude upward from the bottom wall by a preset height. The baffles are located in the flow path of the glue flowing into the second glue outlet hole. The baffles are used to disperse the glue during the flow process, thereby preventing the glue from agglomerating due to viscosity and causing a decrease in flow speed.

[0012] The beneficial effects of this application are as follows: The heating plate of the pressure plate type hot melt glue machine provided by this application has a simple structure and is easy to manufacture. The heating plate body is provided with a first elongated protrusion, a second elongated protrusion, and a third elongated protrusion. A first glue flow channel is provided between the first elongated protrusion and the second elongated protrusion, and a second glue flow channel is provided between the first elongated protrusion and the third elongated protrusion. The opening of the first glue flow channel and the second glue flow channel is large at the end away from the second glue outlet hole and small at the end closer to the second glue outlet hole. This makes the molten glue faster when passing through the first glue flow channel and the second glue flow channel, and the glue dispensing speed is fast. A baffle is also provided to prevent large areas of glue from accumulating together and reducing the flow speed. Attached Figure Description

[0013] Figure 1 An exploded view of the structure of a pressure plate type hot melt adhesive machine provided by this utility model.

[0014] Figure 2This is a schematic diagram of the heating plate structure of a pressure plate type hot melt adhesive machine provided by this utility model.

[0015] Figure 3 Another schematic diagram of the heating plate structure of a pressure plate type hot melt glue machine provided by this utility model. Detailed Implementation

[0016] The present application will now be described in further detail with reference to the accompanying drawings and specific embodiments. Similar elements in different embodiments are referred to by related similar element reference numerals. In the following embodiments, many details are described to facilitate a better understanding of the present application. However, those skilled in the art will readily recognize that some features may be omitted in different situations, or may be replaced by other elements, materials, or methods. In some cases, certain operations related to the present application are not shown or described in the specification. This is to avoid obscuring the core parts of the present application with excessive description. For those skilled in the art, detailed description of these related operations is not necessary; they can fully understand the related operations based on the description in the specification and general technical knowledge in the art.

[0017] Furthermore, the features, operations, or characteristics described in the specification can be combined in any suitable manner to form various embodiments, and the operational steps involved in each embodiment can also be rearranged or adjusted in a manner that is obvious to those skilled in the art. Therefore, the specification and drawings are only for clearly describing a particular embodiment and do not imply that they represent the necessary components and / or order.

[0018] The serial numbers assigned to components in this document, such as "first" and "second," are used only to distinguish the described objects and have no sequential or technical meaning. The terms "connection" and "linkage" used in this application, unless otherwise specified, include both direct and indirect connections (linkages).

[0019] Please refer to Figure 1 This application provides a heating plate structure (hereinafter referred to as "the heating plate structure") for a pressure plate type hot melt adhesive machine. This heating plate structure is part of the pressure plate type hot melt adhesive machine, which includes a drive motor 21, a suction pump 4, and a heating plate 1. The drive motor 21 and the suction pump 4 are connected via a sprocket mechanism 8, thereby enabling the drive motor 21 to provide a power source for the suction pump 4. The suction pump and the heating plate 1 are connected and communicate with each other. The suction pump 4 provides negative pressure suction to the heating plate 1. When the heating plate 1 is inserted into the glue container, it melts the glue adhering to it. The molten glue is then extracted to the outside under the negative pressure suction of the suction pump 4. Both the heating and extraction of the glue are completed in a very short time. The main focus of this application is the structure of the heating plate 1.

[0020] Please refer to Figures 2-3 In one embodiment of this application, the heating plate 1 includes: a heating plate body 13 and a connecting plate 11. The heating plate body 13 and the connecting plate 11 are fixedly connected together, and a sealing groove 120 is formed between the heating plate body 13 and the connecting plate 11. The sealing groove 120 extends circumferentially on the heating plate 1. The sealing groove 120 is adapted to a sealing ring 16, which is embedded in the sealing groove 120. This allows the sealing ring 16 and the glue bucket to form a seal when the heating plate 1 is inserted into the glue bucket, preventing the glue in the glue bucket from overflowing from the gap between the heating plate 1 and the glue bucket when the glue is squeezed. The connecting plate 11 is provided with a first glue outlet hole 110, which extends through the connecting plate 11; the heating plate body 13 is provided with a second glue outlet hole 136, which extends through the heating plate body 13, and the second glue outlet hole 136 and the first glue outlet hole 110 on the connecting plate 11 are in fluid communication; when the heating plate 1 is inserted into the glue bucket, the heating plate body 11 squeezes the glue in the glue bucket and melts the glue, the melted glue enters the second glue outlet hole 136, and flows from the second glue outlet hole 136 into the first glue outlet hole 110.

[0021] In one embodiment of this application, please refer to Figure 3 The heating plate body 13 has a groove 130, which is recessed inward along the axial direction from the outer surface of the heating plate body 13 to a predetermined depth. The groove 130 has a bottom wall 1301, on which a predetermined number of first elongated protrusions 131 and a predetermined number of second elongated protrusions 132 are provided. The first elongated protrusions 131 protrude upward from the bottom wall 1301 to a predetermined height, and are fixedly connected to the bottom wall of the heating plate body 13. 1301; The second elongated protrusion 132 protrudes upward from the bottom wall 1301 to a predetermined height, and the second elongated protrusion 132 is fixedly connected to the bottom wall 1301 of the heating plate body 13; A first glue flow channel 133 is formed between the first elongated protrusion 131 and the second elongated protrusion 132, and the first glue flow channel 133 is in fluid communication with the second glue outlet hole 136, so that the molten glue flows into the second glue outlet hole 136 through the first glue flow channel 133.

[0022] In one embodiment of this application, please refer to Figure 3The first glue flow channel 133 has a first glue flow opening 1331 and a second glue flow opening 1332. The first glue flow opening 1331 and the second glue flow opening 1332 are in fluid communication, and the equivalent diameter of the opening of the first glue flow opening 1331 is smaller than the equivalent diameter of the opening of the second glue flow opening 1332. This allows the glue at the second glue flow opening 1332 to be squeezed to the first glue flow opening 1331 when the pressure gradually increases, and the glue is sprayed out from the first glue flow opening 1331, thus accelerating the glue flow speed.

[0023] In one embodiment of this application, please refer to Figure 3 The heating plate body 13 is also provided with a preset number of third elongated protrusions 134. The third elongated protrusions 134 are disposed on the bottom wall 1301. The third elongated protrusions 134 protrude upward from the bottom wall 1301 to a preset height and are fixedly connected to the bottom wall 1301. One end of the preset number of third elongated protrusions 134 converges to form a collection part 135, and the second glue outlet through hole 136 is close to the collection part 135.

[0024] In one embodiment of this application, please refer to Figure 3 A second glue flow channel 139 is formed between the third elongated protrusion 134 and the first elongated protrusion 131. The second glue flow channel 139 and the second glue outlet hole 136 are in fluid communication, so that the molten glue flows into the second glue outlet hole 136 through the second glue flow channel 139.

[0025] In one embodiment of this application, please refer to Figure 3 The second glue flow channel 139 has a third glue flow opening 1391 and a fourth glue flow opening 1392. The third glue flow opening 1391 and the fourth glue flow opening 1392 are in fluid communication, and the equivalent diameter of the opening of the third glue flow opening 1391 is smaller than the equivalent diameter of the opening of the fourth glue flow opening 1392. This allows the glue at the fourth glue flow opening 1392 to be squeezed to the third glue flow opening 1391 when the pressure gradually increases, and the glue is sprayed out from the third glue flow opening 1391, thus accelerating the glue flow speed.

[0026] In one embodiment of this application, please refer to Figure 3A predetermined number of baffles 1310 are also provided on the heating plate body 13. The baffles 1310 are fixedly provided on the bottom wall 1301 and protrude upward from the bottom wall 1301 to a predetermined height. The baffles 1310 are located in the flow path of the glue flowing into the second glue outlet hole 136. The baffles 1310 are used to disperse the glue during the flow process, thereby preventing the glue from agglomerating due to viscosity and reducing the flow speed.

[0027] The heating plate of the pressure plate type hot melt glue machine provided in this application has a simple structure and is easy to manufacture. The heating plate body is provided with a first elongated protrusion, a second elongated protrusion, and a third elongated protrusion. A first glue flow channel is provided between the first elongated protrusion and the second elongated protrusion, and a second glue flow channel is provided between the first elongated protrusion and the third elongated protrusion. The opening of the first glue flow channel and the second glue flow channel is larger at the end away from the second glue outlet and smaller at the end closer to the second glue outlet. This makes the molten glue faster when passing through the first glue flow channel and the second glue flow channel, and the glue dispensing speed is fast. A baffle is also provided to prevent large areas of glue from accumulating together and reducing the flow speed.

[0028] The above embodiments are only for illustrating the technical concept and features of this utility model, and are intended to enable those skilled in the art to understand the content of this utility model and implement it accordingly. They should not be construed as limiting the scope of protection of this utility model. All equivalent changes or modifications made in accordance with the spirit and essence of this utility model should be included within the scope of protection of this utility model.

Claims

1. A heating plate structure for a pressure plate type hot melt adhesive machine, characterized in that, include: The heating plate body and the connecting plate are fixedly connected together, and a sealing groove is formed between the heating plate body and the connecting plate. The sealing groove extends circumferentially on the heating plate and is adapted to a sealing ring, which is embedded in the sealing groove. This ensures that when the heating plate is inserted into the glue bucket, the sealing ring and the glue bucket form a seal, preventing the glue in the glue bucket from overflowing from the gap between the heating plate and the glue bucket when it is squeezed. The connecting plate is provided with a first glue outlet hole, which passes through the connecting plate. The heating plate body is provided with a second glue outlet hole, which passes through the heating plate body and is fluidly connected to the first glue outlet hole on the connecting plate. When the heating plate is inserted into the glue bucket, the heating plate body squeezes and melts the glue in the glue bucket. The melted glue enters the second glue outlet hole and flows from the second glue outlet hole into the first glue outlet hole.

2. The heating plate structure of the pressure plate type hot melt glue machine according to claim 1, characterized in that, A groove is provided on the heating plate body. The groove is formed by recessing a predetermined depth inward from the outer surface of the heating plate body along the axial direction. The groove has a bottom wall, on which a predetermined number of first elongated protrusions and a predetermined number of second elongated protrusions are provided. The first elongated protrusions protrude upward from the bottom wall by a predetermined height and are fixedly connected to the bottom wall of the heating plate body. The second elongated protrusions protrude upward from the bottom wall by a predetermined height and are fixedly connected to the bottom wall of the heating plate body. A first glue flow channel is formed between the first elongated protrusions and the second elongated protrusions. The first glue flow channel is in fluid communication with the second glue outlet hole, so that molten glue flows into the second glue outlet hole through the first glue flow channel.

3. The heating plate structure of the pressure plate type hot melt adhesive machine according to claim 2, characterized in that, The first glue flow channel has a first glue flow opening and a second glue flow opening. The first glue flow opening and the second glue flow opening are in fluid communication, and the equivalent diameter of the first glue flow opening is smaller than the equivalent diameter of the second glue flow opening. This allows the glue at the second glue flow opening to be squeezed into the glue container when the heating plate is pressed into the glue container. As the glue is squeezed into the first glue flow opening, the pressure gradually increases, and the glue is sprayed out from the first glue flow opening, thus accelerating the glue flow speed.

4. The heating plate structure of the pressure plate type hot melt adhesive machine according to claim 2, characterized in that, The heating plate body is also provided with a preset number of third elongated protrusions. The third elongated protrusions are provided on the bottom wall and protrude upward from the bottom wall to a preset height. The third elongated protrusions are fixedly connected to the bottom wall. One end of the preset number of third elongated protrusions converges to form a collection part, and the second glue outlet is close to the collection part.

5. The heating plate structure of the pressure plate type hot melt glue machine according to claim 4, characterized in that, A second adhesive flow channel is formed between the third elongated protrusion and the first elongated protrusion. The second adhesive flow channel is in fluid communication with the second adhesive outlet hole, so that the molten adhesive flows into the second adhesive outlet hole through the second adhesive flow channel.

6. The heating plate structure of the pressure plate type hot melt glue machine according to claim 5, characterized in that, The second adhesive flow channel has a third adhesive flow opening and a fourth adhesive flow opening, which are in fluid communication. The equivalent diameter of the third adhesive flow opening is smaller than that of the fourth adhesive flow opening. This allows the adhesive at the fourth adhesive flow opening to be squeezed into the adhesive container at a gradually increasing pressure as it reaches the third adhesive flow opening, causing the adhesive to be ejected from the third adhesive flow opening and accelerating the flow rate of the adhesive.

7. The heating plate structure of the pressure plate type hot melt adhesive machine according to claim 2, characterized in that, A preset number of baffles are also provided on the heating plate body. The baffles are fixedly set on the bottom wall and protrude upward from the bottom wall to a preset height. The baffles are located in the flow path of the glue flowing into the second glue outlet hole. The baffles are used to disperse the glue during the flow process, thereby preventing the glue from agglomerating due to viscosity and reducing the flow speed.

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