Floating embedding mechanism for horizontal injection molding machine

Abstract

The utility model discloses a floating embedding mechanism for a horizontal injection molding machine, which comprises a fixed plate, and a floating structure and an auxiliary supporting structure are arranged on the fixed plate; the floating structure comprises a floating plate and plunger assemblies, and the plunger assemblies are assembled at the four corners of the floating plate and used for horizontally adjusting the floating plate; the auxiliary supporting structure comprises a base provided with a sealing cavity, a piston ejector rod movably connected with the sealing cavity, a power pump and a pressure maintaining valve, the power pump and the pressure maintaining valve are connected with the sealing cavity through pipelines, and the power pump conveys fluid into the sealing cavity and pushes the piston ejector rod to be ejected out of the floating plate. Quantitative supporting force F is applied to the floating plate, and the direction of the supporting force F is opposite to the gravity direction of the floating plate. The problem that when an existing robot gripper is used for embedding an insert into a horizontal injection molding machine, the embedding point position deviates is solved.

Description

Technical Field

[0001] The utility model belongs to the technical field of floating embedding mechanisms, in particular to a floating embedding mechanism for a horizontal injection molding machine. Background Art

[0002] Injection molding machine is the main molding equipment that uses plastic molding molds to make plastic products of various shapes from thermoplastics or thermosetting plastics. It can be divided into vertical injection molding machines and horizontal injection molding machines.

[0003] Insert injection molding refers to a processing method in which the insert is placed in the mold in advance, and then plastic is injected to form a one-piece product. After the mold is opened, the insert is embedded in the cooled and solidified plastic.

[0004] Insert injection molding usually uses a six-axis robot. Specifically, the six-axis robot's gripper grabs the insert and then embeds the insert. The six-axis robot's gripper includes a floating embedding mechanism.

[0005] The existing floating embedding mechanism cannot meet the requirement of overcoming its own gravity. When the six-axis robot's gripper embeds the insert, the center of gravity of the floating embedding mechanism moves downward, the center of the embedding point and the center of the gripper both shift downward, deviating from the set center, the embedding resistance increases, and the debugging personnel are unable to accurately calibrate the embedding point. Utility Model Content

[0006] The utility model provides a floating embedding mechanism for a horizontal injection molding machine, which is used to solve the problem of embedding point deviation when a robot gripper embeds an insert into the horizontal injection molding machine.

[0007] In order to solve the above technical problems, the technical solution of the utility model is: a floating embedding mechanism for a horizontal injection molding machine, which is mounted on a robot gripper, and the robot gripper is used to embed an insert into the horizontal injection molding machine, comprising a fixed plate, and the fixed plate is equipped with a floating structure and an auxiliary support structure;

[0008] The floating structure includes a floating plate and a plunger assembly, wherein the plunger assembly is assembled at the four corners of the floating plate to adjust the level of the floating plate;

[0009] The auxiliary support structure includes a base provided with a sealed cavity, a piston push rod movably connected to the sealed cavity, and a power pump and a pressure-stabilizing valve connected to the sealed cavity through a pipeline. The power pump transports fluid into the sealed cavity to push the piston push rod toward the floating plate, thereby applying a quantitative supporting force F to the floating plate, and the direction of the supporting force F is opposite to the direction of the gravity of the floating plate.

[0010] Specifically, the base is fixedly mounted on the fixing plate.

[0011] Specifically, the plunger assembly comprises an L-shaped plunger mounting plate and a spherical plunger, and the spherical plungers are arranged at both ends of the L-shaped plunger mounting plate.

[0012] Specifically, the side ends of the floating plate are each provided with a stop bolt, and the spherical plunger is in contact with the stop bolt.

[0013] Specifically, at least two ejection channels are opened on a side of the sealing cavity facing the floating plate, the ejection channels are communicated with the sealing cavity, and each of the ejection channels is piston-connected to a piston ejector rod.

[0014] Specifically, the piston push rod comprises a push rod and a sealing ring arranged at the bottom of the push rod, the sealing ring and the inner wall of the ejection channel are squeezed and sealed with each other, and the diameter of the push rod is smaller than the diameter of the ejection channel.

[0015] Specifically, the floating plate is equipped with an embedded surface assembly, a lifting assembly and a guide shaft, the lifting assembly is drivingly connected to the embedded surface assembly, the guide shaft moves in coordination with the lifting assembly, and the embedded surface assembly moves along the movement direction of the guide shaft.

[0016] Specifically, a gas interface is installed on the base, and the base is connected to the pipeline through the gas interface.

[0017] Specifically, the power pump is connected to an air source.

[0018] Compared with the prior art, the technical solution provided by the utility model has the following advantages:

[0019] An auxiliary support structure is set up to solve the problem that the embedding point of the insert is offset from the set center due to the floating part of the floating embedding mechanism due to its own gravity, so that the floating embedding mechanism as a whole is in a relatively central state, the embedding point center is consistent with the set center, the insert is embedded smoothly, and it is convenient for the debugging personnel to proofread the embedding point, reduce the relative friction generated when the robot gripper is embedded, and extend the life of the robot gripper. BRIEF DESCRIPTION OF THE DRAWINGS

[0020] Figure 1 It is an exploded view of the floating embedding mechanism in the embodiment of the utility model;

[0021] Figure 2 It is a partial structural diagram of the floating structure in the embodiment of the utility model;

[0022] Figure 3 It is a partial exploded view of the auxiliary support structure in the embodiment of the utility model.

[0023] As shown in the figure: 1. Fixed plate; 2. Floating structure; 21. Floating plate; 22. Plunger assembly; 221. L-shaped plunger mounting plate; 222. Spherical plunger; 23. Stop bolt; 3. Auxiliary support structure; 31. Base; 32. Piston push rod; 321. Push rod; 322. Sealing ring; 33. Pressure regulating valve; 34. Air interface; 35. Ejection channel; 36. End plate; 37. Through hole; 4. Embedded surface assembly; 5. Lifting assembly; 6. Guide shaft. DETAILED DESCRIPTION

[0024] For ease of understanding, the floating embedding mechanism for a horizontal injection molding machine is described below in conjunction with embodiments. It should be understood that these embodiments are only used to illustrate the present utility model and are not used to limit the scope of the present utility model.

[0025] In the description of the present invention, it should be noted that the terms "center", "upper", "lower", "left", "right", "vertical", "horizontal", "inner", "outer", etc., indicating the orientation or positional relationship, are based on the orientation and positional relationship shown in the drawings, and are only for the convenience of describing the present invention and simplifying the description, rather than indicating or implying that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, and therefore cannot be understood as limiting the present invention. In addition, the terms "first", "second", and "third" are used for descriptive purposes only, and cannot be understood as indicating or implying relative importance.

[0026] In the description of the present invention, it should be noted that, unless otherwise clearly specified and limited, the terms "installed", "connected", and "connected" should be understood in a broad sense, for example, it can be a fixed connection, a detachable connection, or an integral connection; it can be a mechanical connection or an electrical connection; it can be a direct connection, or it can be an indirect connection through an intermediate medium, or it can be the internal communication of two components. For ordinary technicians in this field, the specific meanings of the above terms in the present invention can be understood according to specific circumstances.

[0027] like Figure 1 As shown, the floating embedding mechanism in this embodiment is assembled on the robot gripper for use, and includes a fixed plate 1, a floating structure 2 and an auxiliary support structure 3. The floating structure 2 includes a floating plate 21 and a plunger assembly 22. The floating plate 21 is movably connected to the fixed plate 1. There are four plunger assemblies 22. A plunger assembly 22 is provided at each of the four corners of the fixed plate 1. The plunger assembly 22 adjusts the level of the floating plate 21. That is, when the robot gripper embeds the insert into the horizontal injection molding machine, the floating plate 21 can automatically move up, down, left and right to adapt to the embedding action.

[0028] Continue as Figure 1As shown, the auxiliary support structure 3 applies a quantitative support force F to the floating plate 21, and the direction of the support force F is opposite to the direction of the gravity of the floating plate 21. After the auxiliary support structure 3 applies the support F, the center of gravity of the floating plate 21 coincides with the center, reducing the relative friction between the robot gripper and the guide column when buried, thereby extending the life of the robot gripper and the guide column.

[0029] Continue as Figure 1 As shown, an embedded surface component 4 is installed on the front side of the floating plate 21, and the embedded surface component 4 drives the connected lifting component 5, wherein the lifting component 5 is a cylinder, and the cylinder drives the embedded surface component 4 to move forward and backward relative to the fixed plate 1. The floating plate 21 is also equipped with a guide shaft 6, and the guide shaft 6 moves in coordination with the lifting component 5. That is to say, the embedded surface component 4 moves along the movement direction of the guide shaft 6 under the drive of the cylinder, and the insert is embedded in the mold cavity in the horizontal injection molding machine.

[0030] like Figure 2 As shown, screw holes are opened at both ends of each side of the floating plate 21, and a stop bolt 23 is screwed through the screw hole. Specifically, the stud of the stop bolt 23 is screwed into the screw hole, and the bolt head of the stop bolt 23 is located outside the floating plate 21; the plunger assembly 22 includes an L-shaped plunger mounting plate 221 and a spherical plunger 222, the L-shaped plunger mounting plate 221 is fixedly mounted on the fixed plate 1, and the ends of both ends of the L-shaped plunger mounting plate 221 are equipped with a spherical plunger 222, and the spherical plunger 222 is in contact with the stop bolt 23.

[0031] like Figure 1 and Figure 3 As shown, the auxiliary support structure 3 includes a base 31, a piston push rod 32, a power pump and a pressure-stabilizing valve 33. The base 31 is fixedly mounted on the fixed plate 1. A sealed cavity is provided inside the base 31. A pressure sensor is provided in the sealed cavity or in a cavity interconnected with the sealed cavity. A pressure-stabilizing valve 33 is installed on the pipeline. The pressure sensor is used to monitor the air pressure in the sealed cavity, the air pump is used to adjust the air pressure in the sealed cavity, and the pressure-stabilizing valve 33 stabilizes the air pressure in the sealed cavity within a certain pressure range.

[0032] like Figure 3As shown, two ejection channels 36 are provided on one side of the base 31 facing the floating plate 21, and the two ejection channels 36 are interconnected with the sealing cavity, and a piston is connected to a piston push rod 32 in each ejection channel 36; the piston push rod 32 includes a push rod 321 and a sealing ring 322 arranged at the bottom of the push rod 321, and the sealing ring 322 and the inner wall of the ejection channel 36 are squeezed and sealed against each other, and the diameter of the push rod 321 is smaller than the diameter of the ejection channel 36, so as to reduce the friction between the push rod 321 and the ejection channel 3 6, the base 31 is covered with an end plate 37 on one side facing the floating plate 21, and the end plate 37 is provided with a through hole 38 corresponding to the ejection channel 36, the diameter of the through hole 38 is smaller than the diameter of the ejection channel 36, the diameter of the through hole 38 is smaller than the diameter of the sealing ring 322, and the diameter of the through hole 38 is larger than the diameter of the ejector rod 321, the ejector rod 321 passes through the through hole 38 and then supports the floating plate 21, and the end plate 37 limits the sealing ring 322 from being separated from the ejection channel 36, so as to prevent the piston ejector rod 32 from falling.

[0033] Continue as Figure 3 As shown, a gas interface 34 is installed on the side of the base 31 facing away from the floating plate 21. One end of the gas interface 34 is connected to the sealing cavity, and the other end is connected to the pipeline. The pipeline is connected to a power pump, and the power pump is connected to an air source. The power pump in this embodiment is used to transport or extract gas in the sealing cavity, specifically to transport gas into the sealing cavity to push the piston push rod 32 to push out toward the floating plate 21.

[0034] Finally, it should be noted that the above embodiments are only used to illustrate the technical solutions of the utility model, rather than to limit them. Although the utility model has been described in detail with reference to the above embodiments, a person skilled in the art should understand that the technical solutions described in the above embodiments can still be modified, or some or all of the technical features can be replaced by equivalents, and these modifications or replacements do not make the essence of the corresponding technical solutions deviate from the scope of the technical solutions of the embodiments of the utility model.

Claims

1. A floating embedding mechanism for a horizontal injection molding machine, which is mounted on a robot gripper, and the robot gripper is used to embed an insert into the horizontal injection molding machine, characterized in that: It comprises a fixed plate, on which a floating structure and an auxiliary supporting structure are mounted; The floating structure includes a floating plate and a plunger assembly, wherein the plunger assembly is assembled at the four corners of the floating plate to adjust the level of the floating plate; The auxiliary support structure includes a base provided with a sealed cavity, a piston push rod movably connected to the sealed cavity, and a power pump and a pressure-stabilizing valve connected to the sealed cavity through a pipeline. The power pump transports fluid into the sealed cavity to push the piston push rod toward the floating plate, thereby applying a quantitative supporting force F to the floating plate, and the direction of the supporting force F is opposite to the direction of the gravity of the floating plate.

2. The floating embedding mechanism as claimed in claim 1, characterized in that: The base is fixedly mounted on the fixing plate.

3. The floating embedding mechanism as claimed in claim 1, characterized in that: The plunger assembly comprises an L-shaped plunger mounting plate and a spherical plunger, and the spherical plungers are arranged at both ends of the L-shaped plunger mounting plate.

4. The floating embedding mechanism as claimed in claim 3, characterized in that: The side ends of the floating plate are each provided with a stop bolt, and the spherical plunger is in contact with the stop bolt.

5. The floating embedding mechanism as claimed in claim 1, characterized in that: At least two ejection channels are provided on a side of the base facing the floating plate, the ejection channels are communicated with the sealing cavity, each of the ejection channels is connected to a piston push rod by a piston, and an end plate is covered on a side of the base facing the floating plate, the end plate is provided with through holes corresponding to the ejection channels, and the diameter of the through holes is smaller than the diameter of the ejection channels.

6. The floating embedding mechanism as claimed in claim 5, characterized in that: The piston push rod comprises a push rod and a sealing ring arranged at the bottom of the push rod, the sealing ring and the inner wall of the ejection channel are squeezed and sealed with each other, and the diameter of the push rod is smaller than the diameter of the ejection channel.

7. The floating embedding mechanism as claimed in claim 1, characterized in that: The floating plate is equipped with an embedded surface assembly, a lifting assembly and a guide shaft. The lifting assembly is drivingly connected to the embedded surface assembly, the guide shaft and the lifting assembly move in coordination, and the embedded surface assembly moves along the movement direction of the guide shaft.

8. The floating embedding mechanism as claimed in claim 1, characterized in that: A gas interface is installed on the base, and the base is connected to the pipeline through the gas interface.

9. The floating embedding mechanism as claimed in claim 1, characterized in that: The power pump is connected to an air source.

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