Gear press disc pump for a glue dispenser

Abstract

The utility model discloses a gear pressure disc pump for point gum machine, including work table, work table is used for bearing glue bucket. Pressure disc can move along up and down and insert glue bucket, and pressure disc and glue bucket dynamic seal connection, and the glue hole that is used for the glue in glue bucket to flow is set up on pressure disc. The runner connecting block is fixed on the pressure disc, and the runner connecting block is set up with first channel and second channel, and first channel and glue hole lead through, and the runner connecting block is fixed with the heating spare of heating glue in first channel and second channel. Gear pump and runner connecting block fixed connection, and gear pump provides the force of the glue from first channel and flows into second channel. Gear pressure disc pumps the glue precision, and can keep the fluidity of glue.

Description

Technical Field

[0001] This utility model relates to the technical field of glue supply equipment for dispensing machines, and in particular to a gear pressure plate pump used in dispensing machines. Background Technology

[0002] A dispensing machine, also known as a glue coater, glue dripper, glue applicator, or glue potting machine, is specifically designed to control the application of adhesive liquid, dispensing or coating it onto the surface or interior of a product. The adhesive liquid is stored in a glue tank and transported to the dispensing location using a dispensing device. Once one tank of adhesive is used up, the next tank needs to be replaced. The dispensing device typically uses a pressure plate pump with a dispensing hole connecting the inside and outside of the glue tank. During use, the plastic pressure plate is pressed down along the tank wall, causing the adhesive to exit through the dispensing hole. However, this type of pressure plate pump, which uses a pressure plate in conjunction with a screw for feeding, suffers from low precision in glue delivery, failing to meet usage requirements. Furthermore, the adhesive may solidify during screw feeding, affecting subsequent use. Utility Model Content

[0003] To overcome the above-mentioned shortcomings, the purpose of this utility model is to provide a gear pressure plate pump for a dispensing machine, which has high glue delivery accuracy and can maintain the fluidity of the glue.

[0004] To achieve the above objectives, the technical solution adopted by this utility model is: a gear pressure plate pump for a dispensing machine, comprising:

[0005] A workbench, wherein the workbench is used to hold the glue bucket;

[0006] A pressure plate, which can move up and down and be inserted into the glue bucket, the pressure plate and the glue bucket are dynamically sealed together, and the pressure plate is provided with a glue outlet hole for the glue in the glue bucket to flow out.

[0007] A flow channel connecting block is fixed on the pressure plate. The flow channel connecting block has a first channel and a second channel. The first channel is connected to the glue outlet hole. A heating element for heating the glue in the first channel and the second channel is fixed on the flow channel connecting block.

[0008] A gear pump is fixedly connected to the flow channel connecting block, and the gear pump provides a force for the glue to flow from the first channel into the second channel.

[0009] The beneficial effects of this invention are as follows: The flow channel connecting block and gear pump are configured to quantitatively deliver the adhesive dispensed from the pressure plate using the gear pump, resulting in higher precision. Furthermore, to prevent the adhesive from cooling and sticking in the channel, which could affect dispensing and the gear pump's delivery, a heating element is added to the flow channel connecting block to continuously heat the adhesive.

[0010] Furthermore, the flow channel connecting block is made of metal, and it has insertion holes that are not electrically connected to the first and second channels. The heating element is inserted into these insertion holes. The thermal conductivity of metal is used to heat the adhesive in the first and second channels.

[0011] Furthermore, a temperature sensor is also fixed on the flow channel connecting block, which is used to collect the temperature of the flow channel connecting block. Based on the temperature collected by the temperature sensor, the heating element is switched on and off to maintain a constant temperature for the adhesive.

[0012] Furthermore, the gear pump includes a housing, which comprises a cavity and an inlet and an outlet communicating with the cavity. The inlet and the outlet are respectively connected to the first channel and the second channel. A driving gear and a driven gear meshing with the driving gear are rotatably connected within the cavity. The amount of glue is controlled by the rotation of the driving gear and the driven gear, resulting in higher precision.

[0013] Furthermore, a drive motor is also fixed on the pressure plate, and the output end of the drive motor is connected to the drive gear and used to drive the drive gear to rotate.

[0014] Furthermore, the pressure plate includes a pressure plate body and a sealing ring sleeved on the circumference of the pressure plate body, and the sealing ring abuts against the inner wall of the glue barrel;

[0015] The pressure plate body is provided with a vertically penetrating vent hole, and a switch valve is provided at the vent hole. Excess air between the pressure plate body and the glue is discharged through the vent hole.

[0016] Furthermore, the pressure plate body is also provided with an air inlet hole that runs vertically through it. A one-way valve is installed at the air inlet hole, and the one-way valve is connected to an external air supply component. Air is injected through the air inlet hole towards the bottom of the pressure plate body and the glue barrel to prevent the pressure plate and the glue barrel from sticking together and to facilitate their separation.

[0017] Furthermore, the glue outlet is coaxially arranged with the pressure plate body, and the lower surface of the pressure plate body is an upwardly concave curved surface. The curved surface prevents a complete vacuum from forming between the pressure plate body and the bottom of the glue container, which would make it difficult to separate the pressure plate and the glue container. On the other hand, the curved surface structure allows the glue to flow out easily from the glue outlet.

[0018] Furthermore, the worktable is also equipped with multiple positioning blocks, and the glue bucket is placed between the positioning blocks. The positioning blocks are used to position the glue bucket in the horizontal plane.

[0019] Furthermore, the plurality of positioning blocks are symmetrical about the central axis of the glue bucket. The positioning blocks are fixed to the worktable by bolts, and each positioning block has a slotted hole for the bolts to slide through. The position of the positioning block can be finely adjusted through the slotted hole. Attached Figure Description

[0020] Figure 1 This is a three-dimensional structural diagram of an embodiment of the present utility model;

[0021] Figure 2 This is a cross-sectional view of the pressure plate and the flow channel connecting block in an embodiment of this utility model;

[0022] Figure 3 This is a schematic diagram of the flow channel connecting block in an embodiment of the present utility model;

[0023] Figure 4 This is a cross-sectional view of the flow channel connecting block in an embodiment of this utility model;

[0024] Figure 5 This is a schematic diagram of the pressure plate in an embodiment of the present invention;

[0025] Figure 6 This is a top view of the pressure plate in an embodiment of this utility model;

[0026] Figure 7 This is a side view of an embodiment of the present utility model.

[0027] In the picture:

[0028] 1. Worktable; 11. Positioning block; 111. Waist-shaped hole;

[0029] 2. Pressure plate; 21. Pressure plate body; 211. Glue outlet; 212. Air outlet; 213. Air inlet; 214. One-way valve; 215. Switch valve; 22. Sealing ring;

[0030] 3. Flow channel connecting block; 31. First channel; 32. Second channel; 33. Heating element;

[0031] 4. Gear pump; 41. Housing; 42. Cavity; 43. Inlet; 44. Outlet; 45. Driving gear; 46. Driven gear;

[0032] 5. Drive motor;

[0033] 6. Linear module;

[0034] 7. Glue bucket. Detailed Implementation

[0035] The preferred embodiments of the present invention will now be described in detail with reference to the accompanying drawings, so that the advantages and features of the present invention can be more easily understood by those skilled in the art, thereby making a clearer and more definite definition of the scope of protection of the present invention.

[0036] Example

[0037] This invention relates to a gear pressure plate pump for a dispensing machine, used to supply adhesive to a dispensing head (not shown in the figure).

[0038] See appendix Figure 1 As shown, the gear pressure plate pump for the dispensing machine includes a worktable 1, a pressure plate 2, a flow channel connecting block 3, and a gear pump 4.

[0039] The workbench 1 is used to support the glue bucket 7. The pressure plate 2 can move up and down and be inserted into the glue bucket 7. The pressure plate 2 and the glue bucket 7 are dynamically sealed together, so that when the pressure plate 2 moves down, the glue will not leak from the connection between the glue bucket 7 and the pressure plate 2. The pressure plate 2 has a glue outlet hole 211 for the glue in the glue bucket 7 to flow out. When the pressure plate 2 is pressed down, the glue flows out from the glue outlet hole 211 toward the glue dispensing head.

[0040] See appendix Figure 2 As shown, the flow channel connecting block 3 is fixed on the pressure plate 2. The flow channel connecting block 3 has a first channel 31 and a second channel 32. The first channel 31 is connected to the glue outlet 211, allowing the glue extruded from the pressure plate 2 to enter the first channel 31. A heating element 33 is fixed on the flow channel connecting block 3 to heat the glue in the first channel 31 and the second channel 32. Heating the glue as it flows within the flow channel connecting block 3 prevents it from solidifying and ensures it remains in a flowing state. The gear pump 4 is fixedly connected to the flow channel connecting block 3. The gear pump 4 provides the force for the glue to flow from the first channel 31 into the second channel 32. The amount of glue entering the second channel 32 is precisely controlled by the gear pump 4. The dispensing head is connected to the second channel 32 via a pipe, thus achieving precise glue supply to the dispensing head.

[0041] In existing technologies, the adhesive dispensed from the pressure plate 2 is typically transported by a screw pump, but screw pumps have low precision and occupy a large space. In this embodiment, a flow channel connecting block 3 and a gear pump 4 are provided. The gear pump 4 delivers the adhesive dispensed from the pressure plate 2 in a metered manner, achieving higher precision. Simultaneously, to prevent the adhesive from cooling and sticking in the channel, thus affecting dispensing and the delivery of the gear pump 4, a heating element 33 is added to the flow channel connecting block 3 to continuously heat the adhesive.

[0042] In one embodiment, the flow channel connecting block 3 is made of metal. For example, the flow channel connecting block 3 is an aluminum block or a copper block, and preferably a metal material with good thermal conductivity.

[0043] See appendix Figure 3 As shown, the flow channel connecting block 3 has a non-conductive insertion hole that is not connected to the first channel 31 and the second channel 32. The heating element 33 is inserted into the insertion hole. The insertion hole is not connected to the first channel 31 and the second channel 32, ensuring that the heating element 33 does not directly contact the adhesive. Instead, the heat is conducted to the adhesive by the flow channel connecting block 3, which has good thermal conductivity, preventing adhesive contamination. The heating element 33 can be an electric heating rod, inserted and fixed in the insertion hole. When the electric heating rod is energized, it can heat the flow channel connecting block 3.

[0044] In one embodiment, a temperature sensor is also fixed on the flow channel connecting block 3, which is used to collect the temperature of the flow channel connecting block 3. The temperature sensor is communicatively connected to the controller that controls the heating element 33. When the temperature sensor detects that the temperature on the flow channel connecting block 3 is greater than or equal to a set threshold, it sends a signal to the controller, which then controls the heating element 33 to cut off power to save energy. When the temperature sensor detects that the temperature on the flow channel connecting block 3 is less than the set threshold, the controller controls the heating element 33 to be powered on for heating.

[0045] In one embodiment, see Appendix Figure 4 As shown, the gear pump 4 includes a housing 41, which includes a cavity 42 and an inlet 43 and an outlet 44 communicating with the cavity 42. The inlet 43 and the outlet 44 are respectively connected to the first channel 31 and the second channel 32. A driving gear 45 and a driven gear 46 meshing with the driving gear 45 are rotatably connected inside the cavity 42. The gear pump 4 delivers glue by rotating the driving gear 45 and the driven gear 46. The amount of glue delivered is related to the number of rotations of the driving gear 45. Glue in the first channel 31 enters the cavity 42 through the inlet 43. When the driving gear 45 and the driven gear 46 rotate, they squeeze the glue in the cavity 42 to the outlet 44, from which it flows evenly into the second channel 32, thus providing a uniform glue supply to the dispensing head.

[0046] A drive motor 5 is also fixed on the pressure plate 2. The output end of the drive motor 5 is connected to the drive gear 45 and is used to drive the drive gear 45 to rotate. When the drive motor 5 is working, it drives the drive gear 45 to rotate, and the drive gear 45 drives the driven gear 46 meshing with it to rotate, thereby realizing the delivery of glue.

[0047] See appendix Figure 5As shown, the pressure plate 2 includes a pressure plate body 21 and a sealing ring 22 sleeved on the circumference of the pressure plate body 21. The sealing ring 22 abuts against the inner wall of the glue bucket 7. The pressure plate 2 has an embedding groove along its circumference. Part of the sealing ring 22 is embedded in the embedding groove, but when the pressure plate 2 enters the glue bucket 7, the sealing ring 22 abuts against the glue bucket 7 in its circumference, thus achieving a dynamic seal between the pressure plate 2 and the glue bucket 7.

[0048] The pressure plate body 21 is provided with an air vent 212 extending vertically through it, and a switch valve 215 is provided at the air vent 212. When the pressure plate 2 enters the glue tank 7 but does not come into contact with the glue, there is air between the pressure plate body 21 and the glue. If this air cannot be discharged in time, it will affect the pressure plate 2 from pressing out the glue. Therefore, the air vent 212 is provided. The switch valve 215 at the air vent is in the open state before the pressure plate 2 comes into contact with the glue in order to discharge excess air. When the pressure plate 2 presses out the glue, the switch valve 215 is closed.

[0049] When the pressure plate 2 presses down to the bottom of the glue bucket 7, the air pressure in the space between the pressure plate 2 and the bottom of the glue bucket 7 is low, close to a vacuum. The pressure plate 2 is attracted to the bottom of the glue bucket 7, and when the pressure plate 2 moves up to reset, it is not easy to separate from the glue bucket 7. Therefore, in one embodiment, the pressure plate body 21 is also provided with an air inlet 213 that runs vertically through it. A one-way valve 214 is provided at the air inlet 213, and the one-way valve 214 is connected to an external air supply component. After the glue in a glue bucket 7 is applied, air is supplied through the air inlet 213 to the space between the pressure plate 2 and the bottom of the glue bucket 7 to increase the air pressure in this space, so that the glue bucket 7 and the pressure plate 2 can separate. The one-way valve 214 allows air to flow into the air inlet 213 in only one direction, supplying air to the space between the pressure plate 2 and the bottom of the glue bucket 7 through the air supply component.

[0050] In one embodiment, see Appendix Figure 2 As shown, the glue outlet 211 is coaxially arranged with the pressure plate body 21, and the lower surface of the pressure plate body 21 is a curved surface with an upward concave central area. The lower surface of the pressure plate body 21 is no longer a plane, but a curved surface. On the one hand, this avoids the complete formation of a vacuum between the pressure plate body 21 and the bottom of the glue tank 7, which would make it difficult to separate the pressure plate 2 and the glue tank 7. On the other hand, the curved structure makes it easy for glue to flow out from the glue outlet 211.

[0051] In one embodiment, see Appendix Figure 6 As shown, the workbench 1 is also provided with a plurality of positioning blocks 11, and the glue bucket 7 is placed between the plurality of positioning blocks 11. A positioning cavity is formed between the positioning block 11 and the bearing surface of the workbench 1, and the positioning cavity defines the position of the glue bucket 7 in the horizontal space, so that the glue bucket 7 and the pressure plate 2 are aligned.

[0052] The plurality of positioning blocks 11 are symmetrical about the central axis of the glue bucket 7, and the positioning blocks 11 are fixed to the worktable 1 by bolts. For example, three positioning blocks 11 are provided, and the worktable 1 has threaded holes for threaded connection with the bolts.

[0053] The machining of the positioning block 11 may have errors. Initially, the positioning block 11 may not be placed in the standard position, so the position of the positioning block 11 needs to be adjusted. In one embodiment, the positioning block 11 has a slotted hole 111 for the bolt to slide. The positioning block 11 slides along the bolt thread. When adjusted to the correct position, the bolt and the threaded hole are tightened, and the positioning block 11 is clamped between the worktable 1 and the bolt nut.

[0054] A linear module 6 is fixed on the workbench 1. The output end of the linear module 6 is connected to the pressure plate 2 to drive the pressure plate 2 to move up and down. For example, the linear module 6 is a cylinder, and there are two cylinders, which are symmetrically arranged on both sides of the pressure plate 2.

[0055] In one embodiment, see Appendix Figure 7 As shown, there are two gear pressure plate pumps, which are mounted on a movable trolley. The two gear pressure plate pumps work simultaneously to supply different types of adhesive.

[0056] The above embodiments are only for illustrating the technical concept and features of this utility model. Their purpose is to enable those skilled in the art to understand the content of this utility model and implement it. They cannot be used to limit the protection scope of this utility model. All equivalent changes or modifications made in accordance with the spirit and essence of this utility model should be covered within the protection scope of this utility model.

Claims

1. A gear pressure plate pump for a dispensing machine, characterized in that: include: A workbench, the workbench being used to hold the glue bucket; A pressure plate, which can move up and down and be inserted into the glue bucket, the pressure plate and the glue bucket are dynamically sealed together, and the pressure plate is provided with a glue outlet hole for the glue in the glue bucket to flow out. A flow channel connecting block is fixed on the pressure plate. The flow channel connecting block has a first channel and a second channel. The first channel is connected to the glue outlet hole. A heating element for heating the glue in the first channel and the second channel is fixed on the flow channel connecting block. A gear pump is fixedly connected to the flow channel connecting block, and the gear pump provides a force for the glue to flow from the first channel into the second channel.

2. The gear pressure plate pump for a dispensing machine according to claim 1, characterized in that: The flow channel connecting block is made of metal, and the flow channel connecting block has a socket that is not connected to the first channel and the second channel. The heating element is inserted into the socket.

3. The gear pressure plate pump for a dispensing machine according to claim 2, characterized in that: A temperature sensor is also fixed on the flow channel connecting block, and the temperature sensor is used to collect the temperature of the flow channel connecting block.

4. The gear pressure plate pump for a dispensing machine according to any one of claims 1-3, characterized in that: The gear pump includes a housing, which includes a cavity and an inlet and an outlet communicating with the cavity. The inlet and the outlet are respectively connected to the first channel and the second channel. A driving gear and a driven gear meshing with the driving gear are rotatably connected inside the cavity.

5. The gear pressure plate pump for a dispensing machine according to claim 4, characterized in that: A drive motor is also fixed on the pressure plate. The output end of the drive motor is connected to the drive gear and is used to drive the drive gear to rotate.

6. The gear pressure plate pump for a dispensing machine according to claim 1, characterized in that: The pressure plate includes a pressure plate body and a sealing ring sleeved on the circumference of the pressure plate body, and the sealing ring abuts against the inner wall of the glue barrel; The pressure plate body is provided with an air outlet that runs vertically through it, and a switch valve is provided at the air outlet.

7. The gear pressure plate pump for a dispensing machine according to claim 6, characterized in that: The pressure plate body is also provided with an air inlet hole that runs vertically through it, and a one-way valve is provided at the air inlet hole, which is connected to an external air supply component.

8. The gear pressure plate pump for a dispensing machine according to claim 6, characterized in that: The dispensing hole is coaxially arranged with the pressure plate body, and the lower surface of the pressure plate body is an upwardly concave curved surface.

9. The gear pressure plate pump for a dispensing machine according to claim 1, characterized in that: The workbench is also provided with multiple positioning blocks, and the glue bucket is placed between the multiple positioning blocks.

10. The gear pressure plate pump for a dispensing machine according to claim 9, characterized in that: The plurality of positioning blocks are symmetrical about the central axis of the glue bucket. The positioning blocks are fixed to the worktable by bolts, and the positioning blocks are provided with waist-shaped holes for the bolts to slide.

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