Feeding device and rubber injection machine

Abstract

The utility model discloses a feeding device and a rubber injection machine, and relates to the technical field of rubber injection machines, the feeding device is used for conveying rubber materials to a hopper of the rubber injection machine, the feeding device comprises a feeding cover, the feeding cover is provided with a feeding channel, and the feeding channel is communicated with the hopper; the rolling wheel assembly comprises a movable rolling wheel and a fixed rolling wheel, and a sizing material is fed to the feeding channel through a space between the movable rolling wheel and the fixed rolling wheel; the driving part drives the movable roller to rotate, and the movable roller drives the sizing material to be fed to the feeding channel; the detection assembly is used for detecting the motion state of the fixed roller; the technical scheme provided by the utility model has the technical effects that the detection assembly monitors the movement condition of the fixed roller, and when the static movement of the fixed roller exceeds the time limit set by a program, the detection assembly generates an alarm prompt tone, so that an operator is reminded to supplement materials in time, and the shutdown of the rubber injection machine caused by insufficient rubber strips is avoided.

Description

Technical Field

[0001] The utility model relates to the technical field of rubber injection machines, in particular to a feeding device and a rubber injection machine. Background Art

[0002] Rubber injection machines are commonly used to inject thermoplastic or thermosetting plastics into various plastic products using molds. The molten rubber strip is conveyed into the plasticizing screw, which applies high pressure to the molten rubber strip and fills the mold cavity with the rubber strip by injection.

[0003] Existing rubber injection machines usually deliver molten rubber strips directly into the plasticizing screw. The operator cannot understand the feeding status of the feeding system from the outside, causing the rubber injection machine to shut down due to insufficient rubber strip feeding, thereby affecting production efficiency. Utility Model Content

[0004] The main purpose of the utility model is to provide a feeding device and a rubber injection machine, aiming at improving the production efficiency of the rubber injection machine.

[0005] To achieve the above-mentioned purpose, the feeding device proposed in the utility model is used to convey rubber to the hopper of the rubber injection machine, and comprises a feeding cover provided with a feeding channel, wherein the feeding channel is connected with the hopper;

[0006] A roller assembly, the roller assembly comprising a movable roller and a fixed roller, and the rubber material is fed to the feed channel through the space between the movable roller and the fixed roller;

[0007] A driving member, driving the movable roller to rotate, and the movable roller drives the rubber material to feed into the feeding channel;

[0008] The detection component detects the motion state of the fixed roller.

[0009] In one embodiment, the feeding device further includes an elastic member, and the elastic member is connected between the movable roller and the fixed roller.

[0010] In one embodiment, the feeding device further includes a guide support, the guide support includes a body, the movable roller and the fixed roller are arranged in the body at intervals along a first direction, the movable roller is movably arranged in the body, and the detection component is arranged on the body.

[0011] In one embodiment, the feeding device further includes a handle, which is transmission-connected to the movable roller, and the handle is used to drive the movable roller to approach or move away from the fixed roller along the first direction.

[0012] In one embodiment, the body is provided with guide grooves on both sides along its width direction, and the guide grooves include a limiting section and a movable section which are connected to each other. When the movable roller is in a first position away from the fixed roller, the movable roller is engaged with the limiting section, or, when the movable roller is in a second position close to the fixed roller, the movable roller is movably connected to the movable section along the first direction.

[0013] In one embodiment, the body is provided with a first support member and a second support member on both sides along the width direction thereof, the handle includes a connecting portion and a transmission portion provided on both sides of the connecting portion, the transmission portion is rotatably connected to the movable roller, when the movable roller is in a first position away from the fixed roller, the first support member supports the connecting portion, or, when the movable roller is in a second position close to the fixed roller, the second support member supports the connecting portion.

[0014] In one embodiment, the detection component is a proximity switch, and the feeding device further includes a mounting frame, the mounting frame is arranged on the main body, and the detection component is mounted on the mounting frame.

[0015] In one embodiment, at least one side of the outer peripheral wall of the feed cover is provided with an observation hole.

[0016] In one embodiment, the roller assembly further includes a first pin and first bearings disposed at both ends of the first pin, the first pin being disposed in the body, the first pin being passed through the movable roller, and the two ends of the first pin being movably connected to the body through the first bearing; and / or, the roller assembly further includes a second pin and second bearings disposed at both ends of the second pin, the second pin being disposed in the body, and the second pin being passed through the fixed roller.

[0017] The utility model also provides a rubber injection machine, comprising a feeding device as described in any of the above embodiments.

[0018] The technical solution of the utility model adopts a driving member to drive the movable roller to rotate, thereby facilitating the movable roller to drive the rubber strip to be fed into the feeding channel, so that the rubber strip is rolled and squeezed by the roller assembly and then transported to the hopper, and the resistance generated by the movable roller and the fixed roller to the rubber strip is extremely small, thereby reducing the probability of the rubber strip slipping between the roller assemblies and being pulled apart; the movement of the fixed roller is monitored by the detection assembly, and when the fixed roller stops for more than the time limit set by the program, the detection assembly generates an alarm prompt sound, thereby reminding the operator to replenish the material in time, thereby avoiding the shutdown of the rubber injection machine due to insufficient rubber strip. BRIEF DESCRIPTION OF THE DRAWINGS

[0019] In order to more clearly illustrate the embodiments of the utility model or the technical solutions in the prior art, the drawings required for use in the embodiments or the description of the prior art will be briefly introduced below. Obviously, the drawings described below are only some embodiments of the utility model. For ordinary technicians in this field, other drawings can be obtained based on the structures shown in these drawings without paying creative work.

[0020] Figure 1 An exploded view of the structure of an embodiment of a feeding device provided by the utility model;

[0021] Figure 2 A structural schematic diagram of an embodiment of a feeding device provided by the utility model;

[0022] Figure 3 A bottom view of the structure of an embodiment of a feeding device provided by the utility model;

[0023] Figure 4 This is a structural schematic diagram of an embodiment of a rubber injection machine provided by the utility model.

[0024] Description of Figure Numbers:

[0025] 1. Guide support; 11. Main body; 111. Feed channel; 112. Guide groove; 1121. Limit section; 1122. Moving section; 113. First support member; 114. Second support member; 2. Roller assembly; 21. Moving roller; 22. Fixed roller; 23. First pin shaft; 24. First bearing; 25. Second pin shaft; 26. Second bearing; 3. Handle; 31. Connecting part; 32. Transmission part; 4. Detection assembly; 41. Mounting frame; 5. Elastic member; 6. Feed cover; 61. Discharge port; 62. Observation hole; 7. Rubber injection machine.

[0026] The realization of the purpose, functional features and advantages of the utility model will be further explained in conjunction with embodiments and with reference to the accompanying drawings. DETAILED DESCRIPTION

[0027] The following will be combined with the drawings in the embodiments of the utility model to clearly and completely describe the technical solutions in the embodiments of the utility model. Obviously, the described embodiments are only part of the embodiments of the utility model, not all of the embodiments. Based on the embodiments of the utility model, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the utility model.

[0028] It should be noted that if the embodiments of the present invention involve directional indications (such as up, down, left, right, front, back...), the directional indications are only used to explain the relative position relationship, movement status, etc. between the components in a certain specific posture. If the specific posture changes, the directional indications will also change accordingly.

[0029] In addition, if there are descriptions involving "first", "second", etc. in the embodiments of the utility model, the descriptions of "first", "second", etc. are only used for descriptive purposes and cannot be understood as indicating or implying their relative importance or implicitly indicating the number of technical features indicated. Therefore, the features limited to "first" and "second" may explicitly or implicitly include at least one of the features. In addition, if "and / or" or "and / or" appears in the full text, its meaning includes three parallel solutions. Taking "A and / or B" as an example, it includes solution A, solution B, or solutions that satisfy both A and B. In addition, the technical solutions between the various embodiments can be combined with each other, but it must be based on the ability of ordinary technicians in this field to implement. When the combination of technical solutions is contradictory or cannot be implemented, it should be deemed that such combination of technical solutions does not exist and is not within the scope of protection required by the utility model.

[0030] The rubber injection machine 7 is a device commonly used to form various plastic products by injecting thermoplastic or thermosetting plastics into a mold. The molten rubber strip is conveyed into the plasticizing screw, and the plasticizing screw applies high pressure to the molten rubber strip and fills the mold cavity with the rubber strip by injection.

[0031] However, in the process of conceiving and implementing this application, the inventor found that there are at least the following problems:

[0032] The existing rubber injection machine 7 usually directly conveys the molten rubber strip into the plasticizing screw, and the operator cannot understand the feeding status of the feeding system from the outside, so that the rubber injection machine 7 stops due to insufficient rubber strip feeding, thereby affecting production efficiency.

[0033] The utility model provides a feeding device.

[0034] See also Figures 1 to 3 In one embodiment of the utility model, the feeding device is used to deliver rubber to the hopper of the rubber injection machine 7, and the feeding device includes a feeding cover 6, which is provided with a feeding channel 111, and the feeding channel 111 is connected to the hopper;

[0035] A roller assembly 2, wherein the roller assembly 2 comprises a movable roller 21 and a fixed roller 22, and the rubber material is fed to the feed channel 111 through the space between the movable roller 21 and the fixed roller 22;

[0036] A driving member, driving the movable roller 21 to rotate, and the movable roller 21 drives the rubber material to feed into the feeding channel 111;

[0037] A detection component 4, for detecting the motion state of the fixed roller 22;

[0038] The technical solution of the utility model adopts a driving member to drive the movable roller 21 to rotate, thereby facilitating the movable roller 21 to drive the rubber strip to feed into the feeding channel 111, so that the rubber strip is rolled and squeezed by the roller assembly 2 and then conveyed to the hopper. The resistance generated by the movable roller 21 and the fixed roller 22 to the rubber strip is extremely small, thereby reducing the probability of the rubber strip slipping between the roller assemblies 2 and being broken; the movement of the fixed roller 22 is monitored by the detection assembly 4. When the fixed roller 22 stops moving for more than the time limit set by the program, the detection assembly 4 generates an alarm prompt sound, thereby reminding the operator to replenish the material in time, thereby avoiding the shutdown of the rubber injection machine 7 due to insufficient rubber strip.

[0039] In this embodiment, the feed channel 111 includes a feed port and a discharge port 61, the feed port is connected to the space between the moving roller 21 and the fixed roller 22, and the other end of the feed cover 6 is connected to the hopper through the discharge port 61, so that the rubber strip squeezed by the moving roller 21 and the fixed roller 22 is conveniently transported to the hopper through the discharge port 61. The width of the feed port along the width direction of the feed cover 6 is greater than the width of the discharge port 61 along the width direction of the feed cover 6, so that the molten rubber strip that is not transported to the hopper will not accumulate when it is sent back to the feed cover 6. There is a space between the moving roller 21 and the fixed roller 22 for the rubber strip to be fed to the feed channel 111, so that the rubber strip is conveniently transported to the feed channel 111 under the drive of the moving roller 21. The driving member can be a driving motor, the driving member is in transmission connection with the moving roller 21, and the driving member is used to drive the moving roller 21 to rotate, so that the moving roller 21 drives the rubber material to feed to the feed channel 111. It should be noted that the drawings in the manual of the driving part are not marked. When the detection component 4 detects that the fixed roller 22 stops moving for more than the time limit set by the detection component 4, the alarm prompt module of the detection component 4 generates an alarm prompt sound, thereby prompting the production operator to replenish materials in time, avoiding the rubber injection machine 7 from stopping due to insufficient rubber strip materials for injection, thereby improving the production efficiency of the rubber injection machine 7. When the detection component 4 detects that the operator fails to replenish the feed channel 111 in time, the rubber injection machine 7 will stop all actions related to plasticization, thereby reducing the risk of dry grinding between the plasticizing screw and the hopper due to deformation of its own weight.

[0040] like Figures 1 to 3 As shown, in this embodiment, the feeding device further includes an elastic member 5 , and the elastic member 5 is connected between the movable roller 21 and the fixed roller 22 .

[0041] In this embodiment, the elastic member 5 may be a tension spring, one end of the elastic member 5 is connected to the moving roller 21, and the other end of the elastic member 5 is connected to the fixed roller 22. When the moving roller 21 is away from the fixed roller 22, the elastic member 5 is used to provide tension between the moving roller 21 and the fixed roller 22, so that when the moving roller 21 approaches the fixed roller 22, the moving roller 21 can quickly approach the fixed roller 22 by relying on the elastic contraction of the elastic member 5. Two elastic members 5 may be provided, and the two elastic members 5 may be connected to both sides of the moving roller 21 and the fixed roller 22, respectively, so as to further improve the stability of the moving roller 21 moving toward the fixed roller 22.

[0042] like Figures 1 to 3 As shown, in this embodiment, the feeding device also includes a guide support 1, the guide support 1 includes a main body 11, the movable roller 21 and the fixed roller 22 are arranged in the main body 11 at intervals along a first direction, the movable roller 21 can be movably arranged in the main body 11, and the detection component 4 is arranged on the main body 11.

[0043] In this embodiment, the guide support 1 includes a body 11, and the body 11 has a receiving cavity with a first opening on one side, and the guide support 1 is located between the feed cover 6 and the rubber strip feeding mechanism. The movable roller 21 can be movably arranged in the receiving cavity, and the fixed roller 22 can be rotatably arranged in the receiving cavity, so that the rubber strip is rolled and squeezed between the movable roller 21 and the fixed roller 22 for transportation, so that the rubber strip in the hopper that has not entered the plastic injection molding cylinder is conveniently returned to the rubber strip feeding mechanism through the feed cover 6 and the guide support 1. The body 11 can be provided with a first mounting hole, and the detection component 4 is installed on the body 11 through the first mounting hole, so that the detection part of the detection component 4 is located in the receiving cavity and the alarm prompt module for alarm prompt is located outside the receiving cavity, so that it is convenient for production personnel to find out in time and replenish the feed channel 111.

[0044] like Figures 1 to 3 As shown, in this embodiment, the feeding device further includes a handle 3, and the handle 3 is transmission-connected to the movable roller 21, and the handle 3 is used to drive the movable roller 21 to approach or move away from the fixed roller 22 along the first direction.

[0045] In this embodiment, when the machine stops production, the rubber strips that have not entered the plastic injection barrel in the hopper will be driven by the screw to return to the feeding port of the hopper due to the reverse motion of the plasticizing screw. The handle 3 drives the moving roller 21 away from the fixed roller 22, so that the space between the moving roller 21 and the fixed roller 22 is increased, so that the molten rubber strips that have not been delivered to the hopper are delivered back to the rubber strip feeding mechanism through the feeding channel 111 and the guide support 1, thereby avoiding the accumulation and extrusion of the molten rubber strips at the feeding port of the hopper, thereby improving the production efficiency of the rubber injection machine 7. There is an adjustable space between the moving roller 21 and the fixed roller 22. The handle 3 drives the moving roller 21 away from the fixed roller 22, so that the space between the moving roller 21 and the fixed roller 22 is increased, thereby facilitating the rubber strips to be delivered from the space between the moving roller 21 and the fixed roller 22, and then by reducing the space between the moving roller 21 and the fixed roller 22, the moving roller 21 and the fixed roller 22 squeeze the rubber strips for delivery.

[0046] like Figures 1 to 3 As shown, in this embodiment, the body 11 is provided with guide grooves 112 on both sides along its width direction, and the guide grooves 112 include a limiting section 1121 and a moving section 1122 which are connected to each other. When the movable roller 21 is in a first position away from the fixed roller 22, the movable roller 21 is clamped in the limiting section 1121, or, when the movable roller 21 is in a second position close to the fixed roller 22, the movable roller 21 is movably connected to the moving section 1122 along the first direction.

[0047] In this embodiment, the limiting section 1121 is located on a side of the moving section 1122 away from the fixed roller 22. When the moving roller 21 is in the first position away from the fixed roller 22, the moving roller 21 is engaged with the limiting section 1121, thereby limiting the movement of the moving roller 21 in the body 11. When the moving roller 21 is in the second position close to the fixed roller 22, the handle 3 drives the moving roller 21 to disengage from the limiting section 1121, so that the moving roller 21 is movably connected to the moving section 1122 along the first direction, so that the moving roller 21 is driven by the elastic member 5 to quickly approach the fixed roller 22.

[0048] like Figures 1 to 3 As shown, in this embodiment, the limiting section 1121 is located at one end of the body 11 away from the fixed roller 22, the limiting section 1121 extends along the second direction, the moving section 1122 extends along the first direction, and the first direction and the second direction intersect.

[0049] In this embodiment, the guide groove 112 can be set to be L-shaped, and the moving section 1122 can be set to be inclined relative to the first direction so that the elastic member 5 can better drive the moving roller 21 to quickly approach the fixed roller 22. In order for the handle 3 to more easily drive the moving roller 21 to disengage from the limiting section 1121, the limiting section 1121 can be set to be inclined relative to the second direction.

[0050] like Figures 1 to 3 As shown, in this embodiment, the body 11 is provided with a first support member 113 and a second support member 114 on both sides along the width direction thereof, the handle 3 includes a connecting portion 31 and a transmission portion 32 provided on both sides of the connecting portion 31, the transmission portion 32 is rotatably connected to the movable roller 21, when the movable roller 21 is in a first position away from the fixed roller 22, the first support member 113 supports the connecting portion 31, or, when the movable roller 21 is in a second position close to the fixed roller 22, the second support member 114 supports the connecting portion 31.

[0051] In this embodiment, the operator drives the connecting portion 31 to drive the movable roller 21 to be engaged in the limiting section 1121, to drive the movable roller 21 to be separated from the limiting section 1121, or to drive the movable roller 21 to move in the moving section 1122. When the operator needs to separate the movable roller 21 from the limiting section 1121, the operator can move the connecting portion 31 from the first support member 113 to the second support member 114, so that the movable roller 21 is separated from the limiting section 1121, and the second support member 114 supports the connecting portion 31, so that the movable roller 21 moves more stably in the moving section 1122. When the movable roller 21 is in the first position away from the fixed roller 22, the first support member 113 supports the connecting portion 31, so as to improve the stability of the movable roller 21 being engaged in the limiting section 1121.

[0052] like Figures 1 to 3 As shown, in this embodiment, the detection component 4 is a proximity switch, and the feeding device further includes a mounting frame 41 , the mounting frame 41 is disposed on the body 11 , and the detection component 4 is mounted on the mounting frame 41 .

[0053] In this embodiment, the mounting frame 41 may be provided with a second mounting hole, and the detection component 4 is mounted on the mounting frame 41 through the second mounting hole, thereby improving the stability of the connection between the detection component 4 and the body 11 .

[0054] like Figures 1 to 3 As shown, in this embodiment, at least one side of the outer peripheral wall of the feed cover 6 is provided with an observation hole 62.

[0055] In this embodiment, when the rubber injection machine 7 is in production, the operator drives the moving roller 21 to move to the limit section 1121 through the handle 3, passes the strip of rubber through the gap between the moving roller 21 and the fixed roller 22, and aligns the rubber with the feeding port of the hopper through the observation hole 62, and the rubber is then bitten into the hopper by the forward-rotating screw. Due to the high viscosity of the molten rubber, when a large amount of rubber is accumulated and squeezed at the second feeding opening of the hopper, the rubber stuck in the feeding port can be taken out by using a screwdriver through the observation hole 62 or directly from the gap between the roller assemblies 2, thereby preventing the molten rubber that has not been delivered to the hopper from being sent back to the feed cover 6 and accumulated.

[0056] like Figure 1 As shown, in this embodiment, the roller assembly 2 also includes a first pin shaft 23 and a first bearing 24 provided at both ends of the first pin shaft 23, the first pin shaft 23 is provided in the main body 11, the first pin shaft 23 is passed through the movable roller 21, and the two ends of the first pin shaft 23 are movably connected to the main body 11 through the first bearing 24; and / or, the roller assembly 2 also includes a second pin shaft 25 and a second bearing 26 provided at both ends of the second pin shaft 25, the second pin shaft 25 is provided in the main body 11, and the second pin shaft 25 is passed through the fixed roller 22.

[0057] In this embodiment, the movable roller 21 and the fixed roller 22 complete the rolling action through the first bearing 24 and the second bearing 26 respectively, so that the resistance generated by the movable roller 21 and the fixed roller 22 to the rolling and squeezing of the rubber strip is extremely small, thereby ensuring the consistency of the actions of the rubber strip, the movable roller 21 and the fixed roller 22, thereby reducing the probability of the rubber strip being broken due to slipping between the roller components 2. The first bearing 24 and the second bearing 26 can both be set as one-way bearings, so as to prevent the rubber strip from slipping or anti-adhesion so that the rubber strip moves up and down, thereby causing the detection component 4 to fail to detect.

[0058] like Figure 4 As shown, the utility model also proposes a rubber injection machine 7, which includes a feeding device. The specific structure of the feeding device refers to the above embodiment. Since the rubber injection machine 7 adopts all the technical solutions of all the above embodiments, it has at least all the beneficial effects brought by the technical solutions of the above embodiments, which will not be repeated here one by one.

[0059] The above description is only an exemplary embodiment of the present invention, and does not limit the patent scope of the present invention. All equivalent structural changes made by using the contents of the present invention specification and drawings under the technical concept of the present invention, or directly / indirectly applied in other related technical fields are included in the patent protection scope of the present invention.

Claims

1. A feeding device for conveying rubber material to a hopper of a rubber injection machine, characterized in that: include: A feed cover is provided with a feed channel, and the feed channel is communicated with the hopper; A roller assembly, the roller assembly comprising a movable roller and a fixed roller, and the rubber material is fed to the feed channel through the space between the movable roller and the fixed roller; A driving member, driving the movable roller to rotate, and the movable roller drives the rubber material to feed into the feeding channel; The detection component detects the motion state of the fixed roller.

2. The feeding device according to claim 1, characterized in that: The feeding device further comprises an elastic member, and the elastic member is connected between the movable roller and the fixed roller.

3. The feeding device according to claim 1, characterized in that: The feeding device further comprises a guide support, the guide support comprises a body, the movable roller and the fixed roller are arranged in the body at intervals along a first direction, the movable roller is movably arranged in the body, and the detection component is arranged on the body.

4. The feeding device according to claim 3, characterized in that: The feeding device further comprises a handle, which is transmission-connected to the movable roller, and is used to drive the movable roller to approach or move away from the fixed roller along the first direction.

5. The feeding device according to claim 4, characterized in that: The body is provided with guide grooves on both sides along its width direction, and the guide grooves include a limiting section and a moving section which are connected to each other. When the movable roller is in a first position away from the fixed roller, the movable roller is clamped in the limiting section, or, when the movable roller is in a second position close to the fixed roller, the movable roller is movably connected to the moving section along the first direction.

6. The feeding device according to claim 4, characterized in that: The body is provided with a first support member and a second support member on both sides along the width direction thereof, the handle includes a connecting portion and a transmission portion provided on both sides of the connecting portion, the transmission portion is rotatably connected to the movable roller, when the movable roller is in a first position away from the fixed roller, the first support member supports the connecting portion, or, when the movable roller is in a second position close to the fixed roller, the second support member supports the connecting portion.

7. The feeding device according to claim 3, characterized in that: The detection component is a proximity switch, and the feeding device further comprises a mounting frame, the mounting frame is arranged on the main body, and the detection component is mounted on the mounting frame.

8. The feeding device according to claim 3, characterized in that: At least one side of the outer peripheral wall of the feed cover is provided with an observation hole.

9. The feeding device according to any one of claims 3 to 8, characterized in that: The roller assembly further includes a first pin shaft and first bearings disposed at both ends of the first pin shaft, wherein the first pin shaft is disposed in the body, the first pin shaft passes through the movable roller, and both ends of the first pin shaft are movably connected to the body; and / or, The roller assembly further includes a second pin shaft and second bearings arranged at both ends of the second pin shaft, the second pin shaft is arranged in the body, and the second pin shaft passes through the fixed roller.

10. A rubber injection machine, characterized in that: It comprises a feeding device as described in any one of claims 1 to 9.

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