Feeding mechanism of liquid silica gel feeding machine

Abstract

The utility model discloses a feeding mechanism of a liquid silica gel feeding machine, which comprises a feeding driving device, a mounting frame, a flange plate, a first feeding outer cylinder, a second feeding outer cylinder, a first one-way valve, a feeding flaring seat, a pressure plate, a feeding driving rod, a piston connecting rod, a piston, a three-way joint, a discharging joint, a joint connecting pipe and a second one-way valve, the feeding inner cavities are formed in the first feeding outer barrel and the second feeding outer barrel respectively, and when the hydraulic cylinder drives the feeding driving rod, the piston connecting rod and the piston to move downwards, the feeding driving rod can extrude out liquid silica gel in the feeding inner cavity of the second feeding outer barrel; when a hydraulic cylinder drives a feeding driving rod, a piston connecting rod and a piston to move upwards, the feeding driving rod can extrude liquid silica gel in a feeding inner cavity of a first feeding outer barrel, in this way, feeding of the liquid silica gel can be achieved when the feeding driving rod moves upwards and downwards, and the feeding efficiency is greatly improved; and the problem of feeding delay is avoided.

Description

TECHNICAL FIELD

[0001] The utility model relates to liquid silicone rubber feeding machine technical field, more specifically, relate to a kind of liquid silicone rubber feeding machine's feeding mechanism. BACKGROUND

[0002] In the production process of liquid silicone rubber, generally need to use liquid silicone rubber feeding equipment to transport and feed liquid silicone rubber, so as to inject liquid silicone rubber into injection molding machine or other forming equipment. Such as the vertical liquid silicone rubber feeding machine with mixer head of CN206357549U is granted, it includes base, control box, A glue pressure suction device and B glue pressure suction device, A glue pressure suction device and B glue pressure suction device both have two height same piston cylinders, two piston cylinders are separately provided with a piston rod, the end of two piston rods is connected by a connecting plate, the suction pipeline of A glue pressure suction device and B glue pressure suction device is connected on a mixer discharge machine head. However, the A glue pressure suction device and B glue pressure suction device of the liquid silicone rubber feeding machine have the following shortcomings: each pressure suction device is only provided with one feeding cavity, only when the piston rod of piston cylinder moves downward can the liquid silicone rubber sucked into the feeding cavity be extruded, the piston rod moves upward only to play the role of suction, cannot play the role of feeding simultaneously, and the feeding efficiency is low, there may be feeding delay problem. SUMMARY

[0003] The utility model aims at overcoming the above-mentioned defects in the prior art, and provides a feeding mechanism of liquid silicone rubber feeding machine, which can improve the feeding efficiency and avoid feeding delay problem.

[0004] In order to achieve the above object, the utility model provides a kind of feeding mechanism of liquid silicone rubber feed machine, including feeding drive device, mounting bracket, flange, first feeding outer tube, second feeding outer tube, first check valve, feed expansion seat, pressure plate, feeding drive rod, piston connecting rod, piston, tee joint, discharge connector, connector connecting pipe and second check valve, the feeding drive device is installed on flange by mounting bracket, the upper end of first feeding outer tube is connected with flange, the lower end of first feeding outer tube is connected with the upper end of second feeding outer tube, first check valve is connected between the lower end of second feeding outer tube and feed expansion seat, the bottom of feed expansion seat is installed in pressure plate, the middle part of pressure plate is equipped with the pressure plate inlet that is connected with the inside of feed expansion seat, the upper end of feeding drive rod is connected with the output rod of feeding drive device, the lower end of feeding drive rod passes through flange and extends into the inside of first feeding outer tube and second feeding outer tube, the lower end of feeding drive rod is connected with the upper end of piston connecting rod, the lower end of piston connecting rod can extend into the inside of feed expansion seat by first check valve, the piston is installed in the lower end of piston connecting rod, the piston can move up and down in the inside of feed expansion seat and first check valve, the lower end of second feeding outer tube is installed in discharge connector and is connected with the feeding inner chamber of second feeding outer tube, tee joint is installed in the outer wall of first feeding outer tube, the first interface of tee joint is connected with the feeding inner chamber of first feeding outer tube, the second interface of tee joint is connected with the second check valve of outlet of discharge connector by connector connecting pipe, the third interface of tee joint is connected with discharge pipe.

[0005] As preferred, the feeding drive device is set as hydraulic cylinder, air cylinder or oil cylinder.

[0006] As preferred, the output rod of feeding drive device is connected with feeding drive rod by shaft coupling.

[0007] As preferred, the diameter of upper end of feeding drive rod is less than the diameter of lower end.

[0008] As preferred, the volume of feeding inner chamber of second feeding outer tube is greater than the volume of feeding inner chamber of first feeding outer tube.

[0009] As preferred, first rod body sealing ring is arranged between the upper end of feeding drive rod and the inside of first feeding outer tube.

[0010] As preferred, second rod body sealing ring is arranged between the lower end of feeding drive rod and the inside of second feeding outer tube.

[0011] As preferred, pressure plate sealing ring is arranged on the outer ring of pressure plate.

[0012] Preferably, the flange is provided with at least two first connecting columns arranged longitudinally.

[0013] Preferably, the first feeding outer cylinder and the second feeding outer cylinder are fixedly connected through a snap ring.

[0014] Compared with the prior art, the present application has the advantages of:

[0015] The present application has the advantages of reasonable structure, the first feeding outer cylinder and the second feeding outer cylinder are respectively provided with feeding inner cavities, when the hydraulic cylinder drives the feeding driving rod, the piston connecting rod and the piston to move downward, the feeding driving rod can extrude the liquid silica gel stored in the feeding inner cavity of the second feeding outer cylinder, when the hydraulic cylinder drives the feeding driving rod, the piston connecting rod and the piston to move upward, the feeding driving rod can extrude the liquid silica gel stored in the feeding inner cavity of the first feeding outer cylinder, so that the feeding driving rod can realize feeding of liquid silica gel when moving upward and downward, greatly improving the feeding efficiency and avoiding the problem of delayed feeding. BRIEF DESCRIPTION OF DRAWINGS

[0016] In order to more clearly illustrate the technical solutions of the embodiments of the present application or the prior art, the following will briefly introduce the drawings needed to be used in the embodiment or prior art description, and obviously, the drawings in the following description are some embodiments of the present application, and for those skilled in the art, other drawings can also be obtained without creative labor.

[0017] Figure 1 is a structure diagram of the feeding mechanism provided by the embodiment of the present application;

[0018] Figure 2 is a main structure cross-sectional view of the feeding mechanism provided by the embodiment of the present application;

[0019] Figure 3 is an assembly drawing of the feeding mechanism and the lifting driving mechanism provided by the embodiment of the present application. DETAILED DESCRIPTION

[0020] In order to make the purpose, technical scheme and advantages of the embodiments of the present application more clear, the following will combine the drawings in the embodiments of the present application to clearly and completely describe the technical scheme in the embodiments of the present application, obviously, the described embodiments are some embodiments of the present application, not all the embodiments. Based on the embodiments in the present application, all other embodiments obtained by those skilled in the art without creative labor are within the scope of protection of the present application.

[0021] Please refer to Figure 1 and Figure 2The utility model discloses an embodiment provides a kind of liquid silicone feeding mechanism of liquid silicone feeding machine, including feeding drive device 1, mounting bracket 2, flange plate 3, first feeding outer tube 4, second feeding outer tube 5, first check valve 6, feeding expansion seat 7, platen 8, feeding drive rod 9, piston connecting rod 10, piston 11, tee joint 12, discharge connector 13, connector connecting pipe 14 and second check valve 15 etc., the following detailed description of each component of the embodiment is carried out in conjunction with the drawings.

[0022] As Figure 1 And Figure 2 Shown, feeding drive device 1 is installed on flange plate 3 by mounting bracket 2, in the embodiment, feeding drive device 1 can be set as hydraulic cylinder, cylinder or oil cylinder.

[0023] As Figure 1 And Figure 2 Shown, the upper end of first feeding outer tube 4 is connected with flange plate 3, and the lower end of first feeding outer tube 4 is connected with the upper end of second feeding outer tube 5.Specific implementation, first feeding outer tube 4 and second feeding outer tube 5 can be fixedly connected by snap ring 21.

[0024] As Figure 1 And Figure 2 Shown, the inside of first feeding outer tube 4 is equipped with the feeding inner cavity 41 of liquid silicone that can be stored, and the inside of second feeding outer tube 5 is equipped with the feeding inner cavity 51 of liquid silicone that can be stored, and the volume of the feeding inner cavity 51 of second feeding outer tube 5 is greater than the volume of the feeding inner cavity 41 of first feeding outer tube 4.

[0025] As Figure 1 And Figure 2 Shown, first check valve 6 is connected between the lower end of second feeding outer tube 5 and feeding expansion seat 7, and first check valve 6 only allows liquid silicone to be transported upwards to the feeding inner cavity 51 of second feeding outer tube 5.

[0026] As Figure 1 And Figure 2 Shown, platen 8 is installed at the bottom of feeding expansion seat 7, and the middle part of platen 8 is provided with platen inlet 81 that is connected with the inside of feeding expansion seat 7.Platen 8 is used for pressing down the liquid silicone in the material bucket.

[0027] In order to be able to realize the close cooperation with the inner wall of material bucket, the outer ring of platen 8 can be equipped with platen sealing ring 19 for contact cooperation with the inner wall of material bucket.

[0028] As Figure 1 And Figure 2As shown, the output rod of the feeding drive device 1 can be connected to the feeding drive rod 9 via the coupling 16. The lower end of the feeding drive rod 9 passes through the flange 3 and extends into the interior of the first feeding outer cylinder 4 and the second feeding outer cylinder 5. The lower end of the feeding drive rod 9 is connected to the upper end of the piston connecting rod 10. The diameter of the upper part of the feeding drive rod 9 is smaller than the diameter of the lower part.

[0029] like Figure 1 and Figure 2 As shown, the lower end of the piston connecting rod 10 can pass through the first one-way valve 6 and extend into the interior of the feed flare seat 7. The piston 11 is installed at the lower end of the piston connecting rod 10. The feeding drive device 1 can drive the feeding drive rod 9, the piston connecting rod 10 and the piston 11 to move up and down. The piston 11 can move up and down inside the feed flare seat 7 and the first one-way valve 6.

[0030] like Figure 1 and Figure 2 As shown, the discharge connector 13 is installed on the lower end of the outer wall of the second feeding outer cylinder 5 and is connected to the feeding inner cavity of the second feeding outer cylinder 5. The three-way connector 12 is installed on the outer wall of the first feeding outer cylinder 4. The first interface of the three-way connector 12 is connected to the feeding inner cavity 41 of the first feeding outer cylinder 4. The second interface of the three-way connector 12 is connected to the second one-way valve 15 installed at the outlet of the discharge connector 13 through the connector connecting pipe 14. The third interface of the three-way connector 12 is connected to the discharge pipe 21.

[0031] Preferably, to improve sealing, a first rod sealing ring 17 can be provided between the upper end of the feeding drive rod 9 and the interior of the first feeding outer cylinder 4. A second rod sealing ring 18 can be provided between the lower end of the feeding drive rod 9 and the interior of the second feeding outer cylinder 5.

[0032] like Figure 1 and Figure 3 As shown, the flange 3 is provided with at least two longitudinally arranged first connecting columns 20. In this embodiment, the feeding mechanism can be connected to the lifting drive mechanism of the liquid silicone feeder through the first connecting columns 20.

[0033] like Figure 3 As shown, the lifting drive mechanism of the liquid silicone feeder may include two lifting drive cylinders 31 and a lifting beam 32, and the first connecting column 20 may be installed on the lifting beam 32.

[0034] The working principle of the feeding mechanism in this embodiment is as follows:

[0035] Before feeding, the feeding mechanism can be placed in the interior of the barrel, and when feeding, the lifting driving mechanism can drive the feeding mechanism to move downward, when the pressure plate 8 of the feeding mechanism presses the liquid silica gel in the barrel downward, the liquid silica gel in the barrel enters into the feeding flared seat 7 through the feeding inlet 81 of the pressure plate 8 upward, when the feeding driving device 1 drives the piston 11 to move upward, the piston 11 can convey the liquid silica gel entering into the feeding flared seat 7 upward, and the liquid silica gel enters into the feeding inner cavity 51 of the second feeding outer cylinder 5 after passing through the first one-way valve 6, when the feeding driving device 1 drives the feeding driving rod 9 and the piston 11 to move downward, the first one-way valve 6 does not allow the liquid silica gel to flow back downward, and the feeding driving rod 9 can extrude the liquid silica gel stored in the feeding inner cavity 51 of the second feeding outer cylinder 5 out of the second feeding outer cylinder 5, at this time, part of the liquid silica gel can flow into the feeding inner cavity 41 of the first feeding outer cylinder 4 in sequence through the discharge connector 13, the second one-way valve 15, the connector connecting pipe 14 and the three-way connector 12 and is stored, and the other part flows out to the discharge pipe 21, when the feeding driving device 1 drives the feeding driving rod 9 and the piston 11 to move upward again, the piston 11 continues to convey the liquid silica gel entering into the feeding flared seat 7 upward, and the feeding driving rod 9 can extrude the liquid silica gel stored in the feeding inner cavity 41 of the first feeding outer cylinder 4 out of the first feeding outer cylinder 4, since the second one-way valve 15 has a limiting effect, the liquid silica gel stored in the feeding inner cavity of the first feeding outer cylinder 4 can only flow out to the discharge pipe 21, and the circulation is realized.

[0036] In conclusion, the structure design of the utility model is reasonable, feeding driving rod 9 can realize the feeding of liquid silica gel when moving upward and downward, the feeding efficiency is greatly improved, and the problem of feeding delay is avoided.

[0037] The above embodiment is the preferred embodiment of the utility model, but the embodiment of the utility model is not limited by the above embodiment, any change, modification, replacement, combination and simplification without departing from the spirit and principle of the utility model should be equivalent replacement mode and should be included in the protection scope of the utility model.

Claims

1. A feeding mechanism for a liquid silicone feeder, characterized in that: The device includes a feeding drive unit, a mounting bracket, a flange, a first feeding outer cylinder, a second feeding outer cylinder, a first check valve, a feed flare seat, a pressure plate, a feeding drive rod, a piston connecting rod, a piston, a tee connector, a discharge connector, a connector connecting pipe, and a second check valve. The feeding drive unit is mounted on the flange via the mounting bracket. The upper end of the first feeding outer cylinder is connected to the flange, and the lower end of the first feeding outer cylinder is connected to the upper end of the second feeding outer cylinder. The first check valve is connected between the lower end of the second feeding outer cylinder and the feed flare seat. The pressure plate is mounted at the bottom of the feed flare seat, and the pressure plate has a feed inlet in its middle that communicates with the interior of the feed flare seat. The upper end of the feeding drive rod is connected to the output rod of the feeding drive unit, and the lower end of the feeding drive rod passes through... The flange extends into the interior of the first and second feeding outer cylinders. The lower end of the feeding drive rod is connected to the upper end of the piston connecting rod. The lower end of the piston connecting rod can pass through the first one-way valve and extend into the interior of the feed flare seat. The piston is installed at the lower end of the piston connecting rod and can move up and down inside the feed flare seat and the first one-way valve. The discharge connector is installed on the lower end of the outer wall of the second feeding outer cylinder and communicates with the feeding inner cavity of the second feeding outer cylinder. The tee connector is installed on the outer wall of the first feeding outer cylinder. The first interface of the tee connector is connected to the feeding inner cavity of the first feeding outer cylinder. The second interface of the tee connector is connected to the second one-way valve installed at the outlet of the discharge connector through the connector connecting pipe. The third interface of the tee connector is connected to the discharge pipe.

2. The feeding mechanism of the liquid silicone feeder according to claim 1, characterized in that: The feeding drive device is configured as a hydraulic cylinder, air cylinder, or oil cylinder.

3. The feeding mechanism of the liquid silicone feeder according to claim 1, characterized in that: The output rod of the feeding drive device is connected to the feeding drive rod via a coupling.

4. The feeding mechanism of the liquid silicone feeder according to claim 1, characterized in that: The diameter of the upper part of the feeding drive rod is smaller than the diameter of the lower part.

5. The feeding mechanism of the liquid silicone feeder according to claim 1, characterized in that: The volume of the inner feeding cavity of the second feeding outer cylinder is greater than the volume of the inner feeding cavity of the first feeding outer cylinder.

6. The feeding mechanism of the liquid silicone feeder according to claim 1, characterized in that: A first rod sealing ring is provided between the upper end of the feeding drive rod and the inside of the first feeding outer cylinder.

7. The feeding mechanism of the liquid silicone feeder according to claim 1, characterized in that: A second rod sealing ring is provided between the lower end of the feeding drive rod and the inside of the second feeding outer cylinder.

8. The feeding mechanism of the liquid silicone feeder according to claim 1, characterized in that: The outer ring of the pressure plate is provided with a pressure plate sealing ring.

9. The feeding mechanism of the liquid silicone feeder according to claim 1, characterized in that: The flange is provided with at least two longitudinally arranged first connecting columns.

10. The feeding mechanism of the liquid silicone feeder according to claim 1, characterized in that: The first feeding outer cylinder and the second feeding outer cylinder are fixedly connected by a retaining ring.

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