Gluing machine pressure disc structure, gluing machine and pressure disc sealing ring and glue isolation method

Abstract

This invention provides a pressure plate structure for a glue applicator, a glue applicator, and a method for isolating the pressure plate sealing ring from the glue. The pressure plate structure for the glue applicator includes a pressure plate assembly and a sleeve; the sleeve is fitted onto the pressure plate assembly; the pressure plate assembly includes a pressure plate body, a pressure plate base plate, a first sealing ring, a gear pump, and a fluid channel; the gear pump is mounted on the pressure plate body, the pressure plate base plate is located at the bottom of the pressure plate body, and the first sealing ring is installed between the pressure plate body and the pressure plate base plate; the outer diameter of the first sealing ring is larger than the outer diameters of the pressure plate body and the pressure plate base plate; one end of the fluid channel is located at the bottom of the pressure plate base plate, and the other end of the fluid channel passes sequentially through the pressure plate base plate and the pressure plate body and is connected to the gear pump. This invention uses a sleeve design to ensure a tight fit between the sleeve and the pressure plate, achieving the effect of preventing the glue from contacting the pressure plate sealing ring, thereby protecting the sealing ring and improving the overall working efficiency of the glue applicator.

Description

TECHNICAL FIELD

[0001] The present application relates to the technical field of gluing equipment, in particular to a pressing disc structure for a gluing machine, a gluing machine and a method for isolating a sealing ring of a pressing disc from glue. BACKGROUND

[0002] In the existing market gluing system, whether it is foreign equipment or domestic equipment, glue directly contacts with the pressing disc of the gluing machine. As is known to all, glue is corrosive, and the sealing ring in the pressing disc is a high polymer material. Therefore, the glue reacts with the sealing ring after a long time of contact, and the glue has a corrosive effect on the sealing ring. The reaction between the glue and the sealing ring affects the sealing of the sealing ring, thereby causing the glue to overflow, reducing the internal pressure of the gluing machine, and failing to ensure the close contact between the glue and the pump, thereby causing the phenomenon of glue breakage during production. If the glue breakage occurs in a situation where glue breakage is not allowed, it means that the entire workpiece is scrapped, causing production delay and economic loss. In addition, the overflow of glue requires personnel to perform additional cleaning, and therefore, corresponding items and cleaning agents must be used. These items contain glue components, and a special department is required to handle them in the later stage, thereby increasing the handling cost. If the handling is not good, the glue is directly discharged into the environment, which can damage the environment. Moreover, the replacement of the sealing ring after the reaction between the glue and the sealing ring of the pressing disc is very troublesome.

[0003] Patent document CN 105478306 A discloses a pressing disc device of a gluing machine, which comprises a glue injection pipe, a pressing plate and an "O" type sealing ring. The pressing plate is fixedly installed at the lower end of the glue injection pipe, and the pressing plate is provided with a deflation valve. The device further comprises a pressing disc body and a shaft YX type sealing ring. The pressing disc body is annular, and the side surface of the pressing disc body is provided with a groove, and the shaft YX type sealing ring is installed in the groove. The top surface of the pressing disc body is provided with a stepped annular surface formed by an outer annular surface and an inner annular surface, and the "O" type sealing ring is located on the outer annular surface. The pressing disc body is fixedly installed at the lower end of the pressing plate. However, in this scheme, the glue still directly contacts with the sealing ring of the pressing disc of the gluing machine, and still has the above technical problems. SUMMARY

[0004] In view of the defects in the prior art, the purpose of the present application is to provide a pressing disc structure for a gluing machine, a gluing machine and a method for isolating a sealing ring of a pressing disc from glue.

[0005] According to the pressing disc structure for the gluing machine provided by the present application, the pressing disc assembly is provided with the sleeve bag, and the sleeve bag is sleeved on the pressing disc assembly.

[0006] The pressure disc assembly comprises a pressure disc body, a pressure disc bottom plate, a first sealing ring, a gear pump and a fluid channel; the gear pump is installed on the pressure disc body, the pressure disc bottom plate is arranged at the bottom of the pressure disc body, and the first sealing ring is arranged between the pressure disc body and the pressure disc bottom plate; the outer diameter of the first sealing ring is greater than the outer diameter of the pressure disc body and the pressure disc bottom plate;

[0007] One end of the fluid channel is arranged at the bottom end of the pressure disc bottom plate, and the other end of the fluid channel sequentially passes through the pressure disc bottom plate and the pressure disc body and is in communication with the gear pump.

[0008] Preferably, the bag comprises an upper opening, a lower opening and a bag bottom;

[0009] The diameter of the upper opening is equal to the diameter of the bag; the inner diameter of the bag is greater than the outer diameter of the pressure disc body and the pressure disc bottom plate and is less than the outer diameter of the first sealing ring in a natural state; the bag is tightly matched with the first sealing ring;

[0010] The diameter of the lower opening is less than the diameter of the pressure disc bottom plate; the inner wall of the bag bottom is tightly attached to the bottom end of the pressure disc bottom plate, and the inlet of the fluid channel is located at the lower opening;

[0011] The natural state of the first sealing ring is the state of the first sealing ring when the bag is not sleeved on the pressure disc assembly.

[0012] Preferably, the upper opening, the lower opening, the pressure disc body, the pressure disc bottom plate, the fluid channel and the first sealing ring are coaxially arranged.

[0013] Preferably, the pressure disc body comprises an upper pressure disc, an intermediate pressure disc and a second sealing ring; the second sealing ring is arranged between the upper pressure disc and the intermediate pressure disc; the intermediate pressure disc is connected to the pressure disc bottom plate through the first sealing ring; the first sealing ring and the second sealing ring are coaxially arranged and have equal outer diameters.

[0014] Preferably, the first sealing ring and the second sealing ring both comprise rubber sealing rings.

[0015] Preferably, the bag should meet the following requirements:

[0016] It does not react with glue, has wear resistance and has heat sealing performance.

[0017] Preferably, the bag comprises a PE material bag.

[0018] Preferably, the pressure disc bottom plate is in a ring structure, and the shape of the bag bottom is matched with the pressure disc bottom plate.

[0019] According to the method for isolating the sealing ring of the pressing disc from the glue provided by the application, the glue applying machine with the pressing disc structure is used, and the method further comprises the following steps:

[0020] Step 1: opening the upper opening of the sleeve bag;

[0021] Step 2: sleeving the sleeve bag on the pressing disc assembly from bottom to top.

[0022] According to the glue applying machine provided by the application, the glue applying machine with the pressing disc structure is used, and the glue applying machine further comprises a driving structure for driving the pressing disc structure to move up and down.

[0023] Compared with the prior art, the application has the following beneficial effects:

[0024] 1: The sleeve bag is designed to closely adhere to the pressing disc, so that the glue does not contact the sealing ring of the pressing disc, thereby protecting the sealing ring and improving the overall working efficiency of the glue applying machine.

[0025] 2: The sleeve bag is fixed by using the elasticity of the rubber sealing ring, and the sleeve bag is fixed simply and has a simple structure.

[0026] 3: The sleeve bag is a PE material sleeve bag, which does not react with the glue and is durable. DETAILED DESCRIPTION

[0027] Other features, objects and advantages of the application will become more apparent through the following detailed description of the non-limiting embodiments with reference to the accompanying drawings:

[0028] Figure 1 is a structural schematic view of the application;

[0029] Figure 2 is a front view of the sleeve bag;

[0030] Figure 3 is a sectional view of the sleeve bag;

[0031] Figure 4 is a top view of the sleeve bag.

[0032] In the drawings, it is shown that:

[0033] DETAILED DESCRIPTION

[0034] The application will be described in detail below with specific examples. The following examples will help those skilled in the art to further understand the application, but do not limit the application in any form. It should be noted that those skilled in the art can make several changes and improvements without departing from the concept of the application. These are within the scope of protection of the application.

[0035] The application provides a pressure disc structure for a gluing machine, as shown in the drawings, comprising a pressure disc assembly and a sleeve bag 3; the sleeve bag 3 is sleeved on the pressure disc assembly; the pressure disc assembly comprises a pressure disc body 1, a pressure disc bottom plate 2, a first sealing ring 4, a gear pump and a fluid channel; the gear pump is installed on the pressure disc body 1, the pressure disc bottom plate 2 is arranged at the bottom of the pressure disc body 1, and the first sealing ring 4 is installed between the pressure disc body 1 and the pressure disc bottom plate 2; the outer diameter of the first sealing ring 4 is greater than the outer diameter of the pressure disc body 1 and the pressure disc bottom plate 2; Figure 1

[0036] One end of the fluid channel is arranged at the bottom end of the pressure disc bottom plate 2, and the other end of the fluid channel sequentially passes through the pressure disc bottom plate 2 and the pressure disc body 1 and communicates with the gear pump; glue flows into the gear pump from the outside through the fluid channel.

[0037] As shown in the drawings, the sleeve bag 3 comprises an upper opening 31, a lower opening 32 and a sleeve bag bottom 33; the inner diameter of the sleeve bag 3 is greater than the outer diameter of the pressure disc body 1 and the pressure disc bottom plate 2 and is less than the outer diameter of the first sealing ring 4 in a natural state, specifically, the inner diameter of the sleeve bag 3 is slightly less than the outer diameter of the first sealing ring 4 in a natural state, and the sleeve bag 3 is tightly matched with the first sealing ring 4; the natural state of the first sealing ring 4 is the state of the first sealing ring 4 when the sleeve bag 3 is not sleeved on the pressure disc assembly. Figures 1-4 The diameter of the lower opening 32 is less than the diameter of the pressure disc bottom plate 2; the inner wall of the sleeve bag bottom 33 is tightly attached to the bottom end of the pressure disc bottom plate 2, and the inlet of the fluid channel is located at the lower opening 32, that is, the fluid channel is not blocked by the sleeve bag bottom 33. In a preferred example, the pressure disc bottom plate 2 is in a ring structure, and the shape of the sleeve bag bottom 33 matches the pressure disc bottom plate 2. The upper opening 31, the lower opening 32, the pressure disc body 1, the pressure disc bottom plate 2, the fluid channel and the first sealing ring 4 are coaxially arranged.

[0038] As shown in the drawings, the sleeve bag 3 comprises an upper opening 31, a lower opening 32 and a sleeve bag bottom 33; the inner diameter of the sleeve bag 3 is greater than the outer diameter of the pressure disc body 1 and the pressure disc bottom plate 2 and is less than the outer diameter of the first sealing ring 4 in a natural state, specifically, the inner diameter of the sleeve bag 3 is slightly less than the outer diameter of the first sealing ring 4 in a natural state, and the sleeve bag 3 is tightly matched with the first sealing ring 4; the natural state of the first sealing ring 4 is the state of the first sealing ring 4 when the sleeve bag 3 is not sleeved on the pressure disc assembly.

[0039] Figure 1 ​​As shown, in one preferred embodiment, the press plate body 1 comprises an upper press plate 11, a middle press plate 12 and a second sealing ring 5, the second sealing ring 5 is installed between the upper press plate 11 and the middle press plate 12, the middle press plate 12 is sealingly connected with the press plate bottom plate 2 through the first sealing ring 4, the first sealing ring 4 and the second sealing ring 5 are coaxially arranged and have equal outer diameters.

[0040] The first sealing ring 4 and the second sealing ring 5 are both rubber sealing rings. Since the inner diameter of the sleeve bag 3 is only slightly smaller than the outer diameter of the first sealing ring 4, and the rubber sealing ring is elastic, when the sleeve bag 3 is installed, the rubber sealing ring is extruded, the outer diameter becomes smaller, and then the sleeve bag 3 can be smoothly installed on the press plate assembly. After the sleeve bag 3 is installed, the rubber sealing ring is extruded and then tensioned, the sleeve bag 3 and the first sealing ring 4 are tightly matched, and it is ensured that the sleeve bag 3 will not fall off the press plate assembly after being installed on the press plate assembly.

[0041] The sleeve bag 3 should meet the following requirements: no reaction with glue, wear resistance and heat sealing performance. In one preferred embodiment, the sleeve bag 3 is a PE material sleeve bag. In the process of determining the sleeve bag 3 as a PE material sleeve bag, the inventors found that there are many materials on the market that can be made into sleeve bags, such as PET, PC, PVC, ABS, PE, PP, BOPP and composite film. First of all, because the sleeve bag 3 will be in contact with glue, it is necessary to select a material that is not easy to react with glue. Through experiments, it is found that PET, PC, PVC and ABS will produce dissolution or swelling sites when in contact with glue, and are not suitable for use. After screening, PE, PP and BOPP are initially selected. Then the sleeve bags made of PE, PP and BOPP are used on the equipment respectively, and it is found that PP is easy to age, has poor wear resistance, BOPP has poor heat sealing performance and is easy to tear, so these two materials are still not suitable. Finally, PE is selected as the material of the sleeve bag in terms of economy and applicability.

[0042] The application also provides a method for isolating a sealing ring of a pressing disc from glue, which adopts the pressing disc structure for a glue spreading machine and further comprises the following steps: step 1, opening the upper opening 31 of the sleeve bag 3; step 2, from bottom to top, the sleeve bag 3 is sleeved on the pressing disc assembly, specifically, the operator pulls the outer wall of the sleeve bag 3 from bottom to top to tightly fit the sleeve bag bottom 33 with the pressing disc bottom plate 2, in this process, since the inner diameter of the sleeve bag 3 is only slightly smaller than the outer diameter of the first sealing ring 4, and the rubber sealing ring is elastic, when the sleeve bag 3 is installed, the rubber sealing ring is extruded, the outer diameter becomes smaller, and until the outer diameter is smaller than the inner diameter of the sleeve bag 3, at this time, the sleeve bag 3 can be smoothly sleeved on the pressing disc assembly, after the sleeve bag 3 is sleeved, the rubber sealing ring is extruded and then tensioned, the sleeve bag 3 and the first sealing ring 4 are tightly matched, and it is ensured that the sleeve bag 3 will not fall off from the pressing disc assembly after being sleeved on the pressing disc assembly. At this time, the fluid passage inlet is located at the lower opening 32 and is not blocked by the sleeve bag bottom 33, and the glue can enter the gear pump from the lower opening 32 of the sleeve bag 3 through the fluid passage.

[0043] When the sleeve bag 3 is to be disassembled, the operator disassembles the sleeve bag 3 from top to bottom, at this time, since the rubber sealing ring is elastic, the rubber sealing ring can be extruded when the sleeve bag 3 is disassembled, so that the sleeve bag 3 can be smoothly disassembled.

[0044] The application also provides a glue spreading machine comprising the pressing disc structure for a glue spreading machine, and further comprising a driving structure for driving the pressing disc structure to move up and down. In a preferred example, the driving structure is a pneumatic cylinder driving structure or an electric driving structure. When the glue spreading machine works, first, the pressing disc structure is placed above the glue, the driving structure of the glue spreading machine pushes the pressing disc body 1 to move downward, when the pressing disc bottom plate 2 drives the bottom end of the sleeve bag 3 to contact the glue, the pressing disc body 1 continues to move downward, the glue is pressed into the fluid passage, and then enters the gear pump, and finally flows out from the glue outlet of the glue spreading machine. In the process of pressing the glue into the fluid passage, since the sleeve bag 3 is sleeved on the pressing disc assembly, the sleeve bag bottom 33 first directly contacts the glue to press the glue into the fluid passage, so the glue will not directly contact the first sealing ring 4, that is, the effect of protecting the sealing ring of the pressing disc is achieved.

[0045] The application adopts reasonable materials and structures, and adopts the manual loading form to tightly fit the sleeve bag 3 with the pressing disc bottom plate 2, so that the glue does not contact the sealing ring of the pressing disc, thereby achieving the effect of protecting the sealing ring, improving the overall working efficiency of the glue spreading machine, and increasing the economic benefits.

[0046] The application finds suitable materials for manufacturing the sleeve bag 3 through the use and summary of the glue applying system, and specially designs the sleeve bag 3 for the glue spreading machine. Before the glue applying system is used, the sleeve bag 3 is sleeved on the pressing disc assembly to protect the sealing ring of the pressing disc, increase the service life of the glue applying system, and is very convenient to replace, thereby improving the efficiency and increasing the economic benefits.

[0047] In the description of the present application, it needs to be understood that the terms "upper", "lower", "front", "back", "left", "right", "vertical", "horizontal", "top", "bottom", "inner", "outer" and the like indicate the orientation or positional relationship based on the orientation or positional relationship shown in the drawings, and are only for the convenience of describing the present application and simplifying the description, and do not indicate or imply that the device or element referred to must have a particular orientation, be constructed and operated in a particular orientation, and therefore cannot be understood as a limitation on the present application.

[0048] The specific embodiments of the present application are described above. It needs to be understood that the present application is not limited to the above specific embodiments, and those skilled in the art can make various changes or modifications within the scope of the claims, which does not affect the essential content of the present application. The embodiments of the present application and the features in the embodiments can be arbitrarily combined with each other without conflict.

Claims

1. A structure of a presser plate for a gluing machine, characterized by comprising: The pressure disc assembly comprises a pressure disc body (1), a pressure disc bottom plate (2), a first sealing ring (4), a gear pump and a fluid channel; the gear pump is installed on the pressure disc body (1), the pressure disc bottom plate (2) is arranged at the bottom of the pressure disc body (1), and the first sealing ring (4) is arranged between the pressure disc body (1) and the pressure disc bottom plate (2); the outer diameter of the first sealing ring (4) is greater than the outer diameter of the pressure disc body (1) and the pressure disc bottom plate (2). One end of the fluid channel is arranged at the bottom end of the pressure disc bottom plate (2), and the other end of the fluid channel sequentially penetrates through the pressure disc bottom plate (2) and the pressure disc body (1) and is in communication with the gear pump. The upper opening (31) has the same diameter as the diameter of the sleeve bag (3); the inner diameter of the sleeve bag (3) is greater than the outer diameter of the pressure disc body (1) and the pressure disc bottom plate (2) and is less than the outer diameter of the first sealing ring (4) in a natural state; and the sleeve bag (3) is tightly matched with the first sealing ring (4). The lower opening (32) has a diameter less than that of the pressure disc bottom plate (2); the inner wall of the sleeve bag bottom (33) is tightly attached to the bottom end of the pressure disc bottom plate (2), and the inlet of the fluid channel is located at the lower opening (32). The natural state of the first sealing ring (4) is the state of the first sealing ring (4) when the sleeve bag (3) is not sleeved on the pressure disc assembly. The upper opening (31), the lower opening (32), the pressure disc body (1), the pressure disc bottom plate (2), the fluid channel and the first sealing ring (4) are coaxially arranged. The pressure disc body (1) comprises an upper pressure disc (11), an intermediate pressure disc (12) and a second sealing ring (5); the second sealing ring (5) is arranged between the upper pressure disc (11) and the intermediate pressure disc (12); the intermediate pressure disc (12) is sealingly connected to the pressure disc bottom plate (2) through the first sealing ring (4); the first sealing ring (4) and the second sealing ring (5) are coaxially arranged and have the same outer diameter. The first sealing ring (4) and the second sealing ring (5) both comprise a rubber sealing ring. The sleeve bag (3) should meet the following requirements:

2. The structure of the pressure plate for the gluing machine according to claim 1, characterized by, It does not react with glue, has wear resistance and heat sealing performance.

3. The structure of the pressure plate for the gluing machine according to claim 1, characterized by, The sleeve bag (3) comprises a PE material sleeve bag. The pressure disc bottom plate (2) has a ring structure, and the sleeve bag bottom (33) has a shape matched with the pressure disc bottom plate (2).

4. The structure of the pressure plate for the gluing machine according to claim 1, characterized by, The pressure disc structure for the gluing machine according to any one of claims 1-5 further comprises the following steps:

5. The structure of the pressure plate for the gluing machine according to claim 1, characterized by, Step 1: opening the upper opening (31) of the sleeve bag (3); 6. A method of isolating a seal ring of a platen from glue, comprising: Step 2: sleeving the sleeve bag (3) on the pressure disc assembly from bottom to top. The pressure disc structure for the gluing machine according to any one of claims 1-5 further comprises a driving structure for driving the pressure disc structure to move up and down. ​ 7. A gluing machine characterized by ​

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