Injection molding machine for producing and processing rubber products

Abstract

The invention relates to the technical field of rubber product production, in particular to an injection molding machine for rubber product production and processing, which comprises a charging barrel, a nozzle, a screw rod, a check valve and a driving assembly, and further comprises a sleeve, a reciprocating screw rod, a piston pipe, a suction assembly, a mounting plate, a deflector rod, a compacting assembly and a knocking block, the sleeve is arranged in the screw in a sleeved mode, a containing groove is formed in the right end of the check valve, the reciprocating lead screw is arranged in the containing groove and arranged in the axial direction in a penetrating mode, and the piston pipe is arranged in the reciprocating lead screw in a penetrating mode and communicated with the nozzle. According to the invention, through the arrangement of the compacting assembly and the suction assembly, in the reverse rotation process of the sleeve, a rubber melt in the nozzle can be sucked into the piston pipe, the situation that the rubber melt is solidified in the nozzle and consequently the nozzle is blocked is avoided, and meanwhile, the compacting assembly can be used for assisting in sucking the rubber melt into the piston pipe to be discharged; and the injection molding performance of the injection molding machine is effectively ensured.

Description

Technical Field

[0001] The invention relates to the technical field of rubber product production, in particular to an injection molding machine for producing and processing rubber products. Background Art

[0002] A rubber injection molding machine is a mechanical device used to manufacture plastic products. First, the rubber particles or rubber powder in the barrel are heated to a molten state. During this process, the screw in the barrel of the injection molding machine transports the rubber material forward and compacts it. At the same time, friction heat is generated between the screw and the barrel during rotation, which melts the rubber and extracts the air in the barrel. Finally, the rubber is injected into the closed mold cavity through the nozzle at the front end of the barrel. The rubber product is gradually cooled and solidified by the cooling system inside the mold cavity.

[0003] In the process of processing high-viscosity rubber products, an extended straight-through nozzle is usually used to inject the molten rubber products, so as to establish melt pressure inside the injection molding machine and increase the injection rate, while enhancing the mixing effect of the rubber product. However, due to the long nozzle, part of the heat of the molten rubber material will be dissipated from the nozzle surface during the flow of the molten rubber material inside the nozzle, causing the temperature of the rubber material inside the nozzle to drop. When the temperature drops, its fluidity will decrease. In addition, the high viscosity of the rubber material will affect the flow effect of the rubber material inside the nozzle, thereby affecting the injection molding performance. In view of the above problems, there is a better solution in the prior art. A spring heating coil is installed on the outside of the nozzle, and the heat generated by the spring heating coil when it is powered on is used to heat the nozzle, which has a certain degree of insulation effect, thereby reducing the heat consumption of the rubber material inside the nozzle, thereby ensuring the injection molding performance. However, the following defects still exist: since the flow path inside the extended straight-through nozzle is long, when the staff needs to shut down the equipment for shift changes or daily rest, part of the rubber material cools and solidifies inside the nozzle, causing the rubber material to be blocked inside the nozzle, and the function of the spring heating coil is only to keep the molten rubber material inside the nozzle warm. By increasing the power of the spring heating coil to heat the nozzle and melt the rubber material in the nozzle, the nozzle will be damaged, which will still affect the injection molding performance.

[0004] Therefore, in order to solve the above-mentioned problem, a rubber product production and processing injection molding machine is proposed. Summary of the invention

[0005] The purpose of the present invention is to provide an injection molding machine for the production and processing of rubber products, which solves the problem that when the staff needs to stop the equipment for shift change or daily rest, part of the rubber material cools and solidifies inside the nozzle, causing the rubber material to be blocked inside the nozzle, thereby affecting the injection molding performance of the injection molding machine. By setting a compacting component and a suction component, during the reversal of the sleeve, the rubber melt inside the nozzle can be sucked into the inside of the piston tube, avoiding the rubber melt solidifying inside the nozzle and causing the nozzle to be blocked. At the same time, the compacting component can be used to assist the discharge of the rubber melt sucked into the piston tube, effectively ensuring the injection molding performance of the injection molding machine.

[0006] To achieve the above object, the present invention provides the following technical solutions:

[0007] An injection molding machine for producing and processing rubber products comprises a barrel, a nozzle, a screw, a check valve and a driving assembly, and also comprises a sleeve, a reciprocating screw, a piston tube, a suction assembly, a mounting plate, a lever, a compacting assembly and a knocking block. The rotating shaft of the screw is arranged in a sleeve shape, the sleeve is sleeved in the screw, a placement groove is opened at the right end of the check valve, the reciprocating screw is arranged in the placement groove and is axially penetrated, the piston tube is penetrated in the reciprocating screw and is connected with the nozzle, the suction assembly is arranged in the placement groove, when the sleeve is reversed, the suction assembly drives the piston tube to reciprocate through the reciprocating screw, and when the piston tube reciprocates, the rubber melt in the nozzle is pumped into the sleeve, the mounting plate, the lever and the compacting assembly are all arranged on the sleeve, the knocking block is arranged in the screw and connected with the compacting assembly, when the sleeve rotates, the compacting assembly drives the knocking block to intermittently knock the mounting plate through the lever.

[0008] It can be seen that there are many ways to prevent the rubber melt inside the nozzle from cooling down and solidifying and eventually clogging the nozzle when the machine is shut down. The conventional method is to continuously energize the spring heating coil installed outside the nozzle to continuously heat the nozzle, thereby preventing the rubber material inside the nozzle from solidifying. Considering that the injection molding machine needs to be powered off during fault maintenance and the shutdown time is unknown, the spring heating coil needs to increase power to compensate for the heat loss after the injection molding machine is powered off, which not only poses a safety hazard but also increases energy consumption. Therefore, this solution is adopted. When the injection molding machine stops due to a fault, the rubber melt inside the nozzle can be extracted to avoid live maintenance, which solves the safety hazard while also reducing the energy consumption lost by continuous heating.

[0009] Preferably, the suction assembly includes an annular plate 1, an annular plate 2, a slider, a U-shaped rod 1, an annular plate 3, a U-shaped rod 2, a guide tube and a bellows, the annular plate 1 is arranged at the right end of the check valve and is sleeved with the screw, the annular plate 2 is arranged at the left end of the placement groove and is sleeved with the reciprocating screw, the piston tube passes through the sleeve and the reciprocating screw, the slider is sleeved on the reciprocating screw and connected to the piston tube through the U-shaped rod 1, the annular plate 3 is sleeved on the sleeve and is sleeved with the reciprocating screw through the U-shaped rod 2 The check valve is connected, a steel ball is arranged inside, through grooves are opened on both sides of the steel ball, the conducting pipe passes through the steel ball and the two through grooves, the two bellows are respectively arranged inside the corresponding through grooves, the two ends of the conducting pipe are respectively connected with the corresponding bellows, the left end of the piston tube is connected with the corresponding bellows, the two ends of the piston tube are arranged with rubber plugs, the right end of the piston tube is arranged with a one-way valve 1, and the left end of the bellows on the left side is arranged with a one-way valve 2.

[0010] It can be seen that during the shutdown process, the temperature of the rubber melt inside the nozzle will drop as the external heating device of the barrel stops, and the rubber melt will solidify after the temperature drops, causing the solidified rubber to be blocked inside the nozzle, thereby affecting the injection molding effect. Considering that the spring heating coil is normally used to keep the rubber melt in the nozzle in a working state, increasing the heating temperature of the spring heating coil to melt the rubber blocked inside the nozzle will cause the nozzle to withstand a higher temperature, thereby causing damage, further affecting the injection molding performance, so this solution is adopted. When the machine is just shut down, during the reversal of the sleeve, the piston tube can be driven to drive the two rubber plugs to move back and forth along the axial direction of the sleeve, and the rubber melt inside the nozzle is sucked into the piston tube through the one-way valve 1 and the one-way valve 2, avoiding the rubber melt from cooling and solidifying inside the nozzle, thereby ensuring the injection molding performance.

[0011] Preferably, the dense component includes a counterweight block, a connecting rod, a push block and a spring, the counterweight block is embedded in the interior of the mounting plate, the connecting rod is passed through the interior of the counterweight block, the knocking block and the push block are respectively arranged at both ends of the connecting rod, the push block is arranged in a truncated cone shape, and the spring is arranged between the mounting plate and the push block and is sleeved with the connecting rod.

[0012] By adopting the above scheme, the lever can be driven to squeeze the corresponding push block and spring during the forward rotation of the rotating rod, so that after the lever and the push block are misaligned, the restoring effect of the spring can be used to drive the knocking block to knock the mounting plate, thereby achieving the effect of knocking inside the screw, so that the air gathered inside the rubber particles after they are melted into a molten state can be effectively removed, thereby effectively ensuring the injection molding performance.

[0013] Preferably, the number of the shifting rods and the pushing blocks is equal and a plurality of the shifting rods are provided, and the plurality of shifting rods are arranged on the sleeve in an array along a spiral direction.

[0014] It can be seen that the rotation speed of the screw is largely determined by production efficiency. Considering the actual working scene, when the screw speed is slow, the sleeve needs to rotate one circle to drive the knocking block to work, resulting in poor removal of air in the rubber melt. Therefore, this solution is adopted. Every time the sleeve rotates 60°, a lever squeezes the corresponding push block, thereby speeding up the knocking frequency inside the screw. Without the need to improve production efficiency, the air in the rubber melt can be effectively removed, thereby ensuring the injection molding effect.

[0015] Preferably, an arc-shaped connecting plate is provided between two adjacent mounting plates, and the arc-shaped connecting plate is provided directly below the corresponding connecting rod. The arc-shaped connecting plate is a heating plate and the heating area is provided at the bottom.

[0016] It can be seen that the heating device of the barrel is set on the outside, while the rubber particles are accumulated inside the barrel. When the heating device is working, the rubber particles can only be heated from the outside of the barrel, resulting in a slow melting speed of the rubber particles, which affects the injection molding performance of the injection molding machine. Therefore, this solution is adopted. The arc-shaped connecting plate can be heated from the inside of the screw, and the heating device outside the barrel can be used to heat the inside and outside of the accumulated rubber particles simultaneously, which effectively speeds up the melting speed of the rubber particles. While ensuring the injection molding performance of the injection molding machine, it can also achieve the connection of two adjacent mounting plates, further ensuring the stability of the mounting plate, and avoiding the situation where the sleeve drives the mounting plate to rotate during the rotation process.

[0017] Preferably, the one-way valve 1 and the one-way valve 2 have the same conducting direction, and the caliber of the one-way valve 1 is larger than the caliber of the one-way valve 2.

[0018] By adopting the above scheme, when the piston tube reciprocates along its own axis, the one-way conduction effect of the one-way valve 1 and the one-way valve 2 can be used to quickly suck the rubber melt inside the nozzle, thereby avoiding the backflow of the rubber melt.

[0019] Preferably, the driving assembly includes a mounting frame, a motor, gear one and gear two, the mounting frame is sleeved with a screw rod, the motor is arranged on the mounting frame and the output end is connected to gear one, and the gear two is meshed above gear one and sleeved with the screw rod.

[0020] It can be seen that the method of driving the sleeve to rotate includes a motor, and the motor is usually directly installed at the end of the sleeve. Considering the actual work requirements, to avoid affecting the piston tube's conveying of the rubber melt, this solution is adopted. Under the meshing action of gear 1 and gear 2, when the motor is working, it can drive the sleeve to rotate normally, while ensuring the driving effect of the motor on the sleeve, it can avoid blocking the conveying path of the rubber melt sucked into the piston tube, thereby ensuring the injection molding performance.

[0021] Preferably, a hydraulic drive plate is provided on the mounting frame, and the piston tube further comprises a horizontal section and a lead-out section, wherein the horizontal section is provided at the left end of the lead-out section, the radial cross-section of the outer contour of the horizontal section is provided in a rectangular shape, the horizontal section passes through the hydraulic drive plate, and the lead-out section is provided in a downwardly inclined manner.

[0022] By adopting the above scheme, the piston tube can be limited. During the rotation of the reciprocating screw, the connection effect between the horizontal section and the hydraulic drive plate can be utilized to prevent the piston tube from rotating with the reciprocating screw. As a result, the rubber melt in the nozzle can be sucked into the interior of the piston tube during the rotation of the reciprocating screw. At the same time, the rubber melt inside the piston tube can be discharged under the action of the discharge section, thereby preventing the rubber melt from being blocked in the interior of the piston tube and affecting the injection molding effect.

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

[0024] 1. The motor is set to drive the sleeve to rotate forward or reverse according to actual work needs. In the process of the motor driving the sleeve to rotate forward, the normal operation of the screw can be guaranteed, and the air in the rubber melt can be discharged faster through the dense component, thereby ensuring the injection molding performance of the injection molding machine; and in the process of the motor driving the sleeve to reverse, the suction component can be used to suck the rubber melt inside the nozzle into the inside of the piston tube, and as the rubber melt sucked from the inside of the nozzle gradually increases, the rubber melt can be discharged from the end of the piston tube, avoiding nozzle blockage while ensuring the normal operation of the injection molding machine, and further ensuring the injection molding performance of the injection molding machine.

[0025] 2. Through the sleeve, reciprocating screw and piston tube, the sleeve can be reversed to drive the reciprocating screw to rotate when the machine is stopped, and the piston tube can be driven to make reciprocating linear motion along the axial direction of the sleeve. In the process of the movement of the piston tube, the rubber plug, one-way valve 1 and one-way valve 2 arranged at both ends can be used to continuously draw external air into the piston tube through the nozzle of the injection molding machine, so that the rubber melt remaining in the nozzle when the machine is stopped can be sucked into the piston tube, avoiding the rubber melt from cooling and solidifying inside the disc nozzle and causing nozzle clogging, thereby ensuring the injection molding performance of the injection molding machine.

[0026] 3. Through the arrangement of the sleeve, lever, knocking block and compacting component, the normal operation of the injection molding machine can be ensured by utilizing the positive rotation of the sleeve without stopping the machine, and the knocking block can be driven to separate from the corresponding mounting plate by squeezing the compacting component by the lever during the positive rotation of the sleeve, and after the lever and the compacting component are misaligned, the knocking block can be automatically reset and collide with the mounting block, which has a vibration effect inside the barrel, so that the air in the rubber melt can be discharged during the continuous feeding of the barrel, thereby ensuring the injection molding performance.

[0027] 4. By setting the arc-shaped connecting plate, the barrel can be heated from the inside when the injection molding machine is working normally, so that the rubber particles accumulated inside the barrel can be heated on both the inside and outside at the same time, which effectively shortens the time required for the rubber particles to melt. While ensuring the injection molding performance of the injection molding machine, the two adjacent mounting plates can be connected. The stability of the mounting plate is guaranteed by the counterweight block, which ensures the normal operation of the dense component and further ensures the injection molding performance of the injection molding machine. BRIEF DESCRIPTION OF THE DRAWINGS

[0028] Figure 1 It is a structural schematic diagram of the present invention;

[0029] Figure 2 For the present invention Figure 1 An enlarged view of the local A in the middle;

[0030] Figure 3 It is a schematic diagram of the connection structure of the sleeve, the piston tube and the compacting component of the present invention;

[0031] Figure 4 It is a schematic diagram of the connection structure of the screw rod, the check valve, the piston tube and the suction assembly of the present invention;

[0032] Figure 5 It is a schematic diagram of the connection structure of the piston tube, the one-way valve 1 and the rubber plug of the present invention;

[0033] Figure 6 For the present invention Figure 3 An enlarged view of the local B portion;

[0034] Figure 7 It is a perspective structural diagram of the connection between the sleeve and the lever of the present invention;

[0035] Figure 8 It is a schematic diagram of the connection structure between the barrel, the nozzle and the driving assembly of the present invention;

[0036] Fig. 9 This is a flow path diagram of the rubber melt when the present invention works normally.

[0037] In the figure: 1, barrel; 2, nozzle; 3, screw; 4, check valve; 41, placement groove; 42, steel ball; 43, through groove; 5, drive assembly; 51, mounting frame; 52, motor; 53, gear 1; 54, gear 2; 55, hydraulic drive plate; 6, sleeve; 7, reciprocating screw; 8, piston tube; 81, rubber plug; 82, one-way valve 1; 83, one-way valve 2; 84, horizontal section; 85, Lead-out section; 9, suction assembly; 91, annular plate one; 92, annular plate two; 93, slider; 94, U-shaped rod one; 95, annular plate three; 96, U-shaped rod two; 97, conduction pipe; 98, bellows; 10, mounting plate; 11, lever; 12, dense assembly; 121, counterweight block; 122, connecting rod; 123, push block; 124, spring; 125, arc-shaped connecting plate; 13, knocking block. DETAILED DESCRIPTION

[0038] The following will be combined with the drawings in the embodiments of the present invention to clearly and completely describe the technical solutions in the embodiments of the present invention. Obviously, the described embodiments are only part of the embodiments of the present invention, not all of the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the present invention.

[0039] See also Figures 1 to 9 The present invention provides an injection molding machine for producing and processing rubber products, and the technical solution is as follows:

[0040] For details, please refer to Figure 1 , Figure 2 , Figure 3 , Figure 4 and Fig. 9 , an injection molding machine for producing and processing rubber products, including a barrel 1, a nozzle 2, a screw 3, a check valve 4 and a driving assembly 5, and also including a sleeve 6, a reciprocating screw 7, a piston tube 8, a suction assembly 9, a mounting plate 10, a lever 11, a compacting assembly 12 and a knocking block 13. The rotating shaft of the screw 3 is arranged in a sleeve shape, and the sleeve 6 is sleeved in the screw 3. The sleeve 6 is rotatably sleeved with the screw 3 through a one-way bearing. The sleeve 6 can drive the screw 3 to rotate during the forward rotation of the sleeve 6, and the sleeve 6 can drive the screw 3 to rotate. The screw rod 3 cannot be driven to rotate during the reversal process. A placement groove 41 is provided at the right end of the check valve 4. The reciprocating screw rod 7 is arranged in the placement groove 41 and is axially penetrated. The piston tube 8 is penetrated inside the reciprocating screw rod 7 and is connected to the nozzle 2. The suction assembly 9 is arranged inside the placement groove 41. When the sleeve 6 is reversed, the suction assembly 9 drives the piston tube 8 to reciprocate through the reciprocating screw rod 7. When the piston tube 8 reciprocates, the rubber melt in the nozzle 2 is pumped into the sleeve 6.

[0041] The suction assembly 9 includes an annular plate 1 91, an annular plate 2 92, a slider 93, a U-shaped rod 1 94, an annular plate 3 95, a U-shaped rod 2 96, a guide tube 97 and a bellows 98. The annular plate 1 91 is arranged at the right end of the check valve 4 and is sleeved with the screw 3. Here, the annular plate 1 91 and the screw 3 are rotatably sleeved by a sealed bearing. The screw 3 and the annular plate 1 91 are fixedly sleeved. During the rotation of the screw 3, the annular plate 1 91 can be driven to rotate, thereby driving the check valve 4 to rotate synchronously. The annular plate 2 92 is arranged at the left end of the placement groove 41 and is sleeved with the reciprocating screw 7. The piston tube 8 is arranged through the sleeve 6 and the reciprocating screw 7. The slider 93 is sleeved on the reciprocating screw 7 and connected to the piston tube 8 through the U-shaped rod 1 94. The annular plate 3 95 is sleeved on the sleeve 6 and connected to the reciprocating screw 7 through the U-shaped rod 2 96. The annular plate 3 95 is sleeved by a one-way bearing It is rotatably sleeved with the sleeve 6, and can drive the annular plate three 95 to rotate during the reverse rotation of the sleeve 6, but cannot drive the annular plate three 95 to rotate during the forward rotation of the sleeve 6. A steel ball 42 is arranged inside the check valve 4, and through grooves 43 are opened on both sides of the steel ball 42. The conducting pipe 97 penetrates the steel ball 42 and the two through grooves 43. The two bellows 98 are respectively arranged in the corresponding through grooves 43. The two ends of the conducting pipe 97 are respectively connected to the corresponding bellows 98. The left end of the piston tube 8 is connected to the corresponding bellows 98. Rubber plugs 81 are arranged at both ends of the piston tube 8. A one-way valve 82 is arranged at the right end of the piston tube 8, and a one-way valve 83 is arranged at the left end of the bellows 98 on the left side. The conducting directions of the one-way valve 82 and the one-way valve 83 are the same, and the caliber of the one-way valve 82 is larger than that of the one-way valve 83.

[0042] Under the above-mentioned setting conditions, during the forward rotation of the sleeve 6, the screw 3 can be driven to rotate to ensure the normal operation of the screw 3. In the stopped state, during the reverse rotation of the sleeve 6, the annular plate 3 95 and the U-shaped rod 2 96 can be used to drive the reciprocating screw 7 to rotate synchronously. During the rotation of the reciprocating screw 7, the slider 93 and the U-shaped rod 1 94 can be used to drive the piston tube 8 to reciprocate along the axial direction of the sleeve 6. During the movement of the piston tube 8 to the left, part of the air in the piston tube 8 can be discharged outward through the one-way valve 1 82. When there is a lot of rubber melt in the piston tube 8, the rubber melt can also be discharged through the one-way valve 1 82 to avoid the rubber melt from accumulating inside the piston tube 8 and affecting the normal operation of the piston tube 8. During the movement of the piston tube 8 to the right, the negative pressure inside the reciprocating screw 7 can be used to suck the rubber melt inside the nozzle 2 to the right. As the reciprocating screw 7 continues to rotate, until the rubber melt is completely sucked into the piston tube 8 and finally discharged, it can avoid the rubber melt from cooling and solidifying inside the nozzle 2, thereby ensuring the injection molding performance.

[0043] As an embodiment of the present invention, refer to Figure 3 , Figure 6 and Figure 7 , the mounting plate 10, the lever 11 and the compacting component 12 are all arranged on the sleeve 6, the knocking block 13 is arranged inside the screw rod 3 and connected to the compacting component 12, when the sleeve 6 rotates, the compacting component 12 drives the knocking block 13 to intermittently knock the mounting plate 10 through the lever 11, the compacting component 12 includes a counterweight block 121, a connecting rod 122, a push block 123 and a spring 124, the counterweight block 121 is embedded in the interior of the mounting plate 10, the connecting rod 122 is penetrated in the interior of the counterweight block 121, the knocking block 13 and the push block 123 are respectively arranged at both ends of the connecting rod 122, the push block 123 is arranged in a truncated cone shape, the spring 124 is arranged between the mounting plate 10 and the push block 123 and is sleeved with the connecting rod 122, the lever 11 and the push block 123 are equal in number and are both provided in plurality, and the plurality of levers 11 are arranged in an array along the spiral direction on the sleeve 6.

[0044] Under the above-mentioned setting conditions, when the injection molding machine works normally, the sleeve 6 rotates forward. At this time, the mounting plate 10 can avoid rotating with the sleeve 6 under the action of the counterweight block 121, and the lever 11 arranged on the sleeve 6 will rotate around the axis of the lever 11, and squeeze the side wall of the push block 123 during the rotation. After being squeezed by the lever 11, the push block 123 will move away from the lever 11 and squeeze the spring 124. At the same time, under the action of the connecting rod 122, the knocking block 13 will move away from the corresponding mounting plate 10. As the sleeve 6 continues to rotate, the lever 11 is separated from the push block 123, and the spring 124 will reset under the action of its own elastic force, and will squeeze the push block 123 during the resetting process, so that the push block 123 drives the knocking block 13 to knock on the mounting plate 10 through the connecting rod 122, and the air in the rubber melt is accelerated to be discharged through the vibration effect generated inside the barrel 1, thereby ensuring the injection molding performance.

[0045] As an embodiment of the present invention, refer to Figure 3 and Figure 6 An arc-shaped connecting plate 125 is provided between two adjacent mounting plates 10 . The arc-shaped connecting plate 125 is provided directly below the corresponding connecting rod 122 . The arc-shaped connecting plate 125 is a heating plate and the heating area is provided at the bottom.

[0046] Under the above-mentioned setting conditions, the rubber particles can be heated from the inside of the barrel 1 when the arc-shaped connecting plate 125 is working, thereby realizing synchronous heating of the inside and outside of the accumulated rubber particles, effectively accelerating the melting speed of the rubber particles, and ensuring the injection molding performance of the injection molding machine. In addition, the multiple mounting plates 10 can be connected into a whole under the gravity and connection of the multiple arc-shaped connecting plates 125, further avoiding the situation where the mounting plate 10 is driven to rotate when the sleeve 6 rotates. The heating area is set at the bottom of the arc-shaped connecting plate 125, which can achieve effective heating of the inner wall of the screw 3. At the same time, since the rotating shaft of the screw 3 is set in a sleeve shape, it is convenient to install the power cord of the arc-shaped connecting plate 125, and it is also convenient to limit the arc-shaped connecting plate 125 by setting external components, thereby effectively avoiding the mounting plate 10 from rotating with the sleeve 6.

[0047] As an embodiment of the present invention, refer to Figure 5 and Figure 8 The driving assembly 5 includes a mounting frame 51, a motor 52, a gear 1 53 and a gear 2 54. The mounting frame 51 is sleeved with the screw rod 3. The motor 52 is arranged on the mounting frame 51 and the output end is connected with the gear 1 53. The gear 2 54 is meshed with the top of the gear 1 53 and is sleeved with the screw rod 3. A hydraulic driving plate 55 is arranged on the mounting frame 51. The piston tube 8 also includes a horizontal section 84 and a lead-out section 85. The horizontal section 84 is arranged at the left end of the lead-out section 85. The radial cross-section of the outer contour of the horizontal section 84 is set to a rectangular shape. The horizontal section 84 is set to pass through the hydraulic driving plate 55, and the lead-out section 85 is set to be inclined downward.

[0048] Under the above-mentioned setting conditions, the motor 52 can drive the sleeve 6 to rotate during operation, and the different rotation directions of the output end of the motor 52 can respectively realize the driving of the screw 3 and the reciprocating screw 7, while not affecting the normal rotation of the sleeve 6. At the same time, it can also ensure that the rubber melt flows normally in the piston tube 8 passing through the sleeve 6, thereby ensuring the injection molding performance of the injection molding machine, and the rectangular setting of the radial cross-section of the outer contour of the horizontal section 84 can avoid the rotation of the piston tube 8 when it is sleeved with the hydraulic drive plate 55, thereby ensuring that the piston tube 8 can suck the rubber melt inside the nozzle 2 into the piston tube 8 during operation, and avoid the rubber melt from being blocked inside the nozzle 2 after cooling down.

[0049] Working principle: In order to speed up the discharge of air in the rubber melt when the injection molding machine is working normally, refer to Figure 3 , Figure 5 , Figure 6 and Figure 7, through the provided lever 11, the compacting component 12 and the knocking block 13, the multiple knocking blocks 13 can intermittently knock the corresponding mounting plate 10 during the forward rotation of the driving sleeve 6, thereby generating a vibration effect from the inside of the barrel 1, accelerating the discharge of air from the inside of the rubber melt into the barrel 1 and finally being sucked to the outside of the barrel 1, thereby ensuring the injection molding performance of the injection molding machine; in order to prevent the rubber material inside the nozzle 2 from cooling and solidifying when the equipment is stopped during operation, refer to Figure 1 and Figure 4 By setting the reciprocating screw 7 and the piston tube 8, the piston tube 8 can be reciprocated along the axial direction of the sleeve 6 during the reversal of the sleeve 6, so that the rubber melt inside the nozzle 2 is sucked into the piston tube 8 and finally discharged, avoiding the blockage inside the nozzle 2 and further ensuring the injection molding performance of the injection molding machine.

[0050] Specific:

[0051] The output end of the motor 52 drives the sleeve 6 to rotate through the meshing action of the gear 1 53 and the gear 2 54, and the sleeve 6 is controlled to rotate forwardly by the motor 52. Since the sleeve 6 and the screw 3 as well as the sleeve 6 and the annular plate 3 95 are connected through a one-way bearing, when the sleeve 6 rotates forwardly, the annular plate 3 95 does not rotate and the screw 3 rotates forward with the sleeve 6, so that the injection molding machine works normally. At this time, the lever 11 on the sleeve 6 rotates synchronously with the sleeve 6 and squeezes the corresponding push block 123 during the rotation. When the push block 123 is squeezed, the knock block 13 is driven to separate from the corresponding mounting plate 10 through the connecting rod 122 and squeeze the spring 124. When the lever 11 and the push block 123 are misaligned, the knock block 13 is driven to separate from the corresponding mounting plate 10 and squeeze the spring 124. After the spring 124 is in position, the spring 124 drives the knocking block 13 to reset and knock the mounting plate 10 through its own elastic force, generating a vibration effect inside the barrel 1. Since two adjacent mounting plates 10 are connected by the arc-shaped connecting plate 125, multiple mounting plates 10 can be formed into a whole, so that the mounting plates 10 are prevented from rotating with the sleeve 6 under the action of the lever 11. At the same time, the heating effect of the arc-shaped connecting plate 125 is cooperated to accelerate the melting speed of the rubber particles accumulated in the barrel 1 and the exhaust speed of the air in the rubber melt. Under the double heating effect, the rubber melt can be effectively prevented from sticking to the screw 3, thereby shortening the number of shutdowns for cleaning, and further ensuring the injection molding performance of the injection molding machine.

[0052] When the injection molding machine needs to be stopped during operation, the motor 52 is used to control the sleeve 6 to reverse. Since the sleeve 6 and the screw 3 as well as the sleeve 6 and the annular plate three 95 are connected by a one-way bearing, when the sleeve 6 reverses, the screw 3 does not rotate but the annular plate three 95 rotates with the sleeve 6, so as to prevent the rubber melt in the barrel 1 from being transported to the right end of the barrel 1 by the screw 3 and causing the rubber melt to overflow from the feeding position. The connection between the annular plate three 95 and the U-shaped rod two 96 can be used to drive the reciprocating screw 7 to rotate synchronously. Since the horizontal section 84 of the piston tube 8 is fixedly connected by the U-shaped rod one 94 and the slider 93, and the sleeve connection of the piston tube 8 and the hydraulic drive plate 55 can realize the limiting of the piston tube 8, so as to prevent the piston tube 8 from rotating with the reciprocating screw 7, so that during the rotation of the reciprocating screw 7, the slider 93 can drive the piston tube 8 to reciprocate along the axial direction of the sleeve 6. During the reciprocating movement of the piston tube 8 Through the one-way conduction effect of the one-way valve 1 82 and the one-way valve 2 83 (the one-way valve 1 82 and the one-way valve 2 83 are both one-way conduction toward the right end, when the piston tube 8 moves to the right, the one-way valve 1 82 is in a non-conducting state under the pressure inside the conducting tube 97 and the two bellows 98, and the one-way valve 2 83 will draw the rubber melt inside the nozzle 2 to the inside of the bellows 98 at the left end, with the continuous rotation of the reciprocating screw 7, until the rubber melt in the nozzle 2 is sucked into the inside of the piston tube 8, when the piston tube 8 moves to the left, the one-way valve 2 83 is in a non-conducting state under the pressure inside the conducting tube 97 and the two bellows 98, and the one-way valve 1 82 will discharge the rubber melt in the piston tube 8), the rubber melt inside the nozzle 2 is continuously sucked into the inside of the piston tube 8, thereby avoiding the blockage of the nozzle 2 and effectively ensuring the injection molding performance of the injection molding machine;

[0053] During the reversal of the sleeve 6, the striking block 13 can still be driven by the lever 11 to work, which accelerates the flow of the rubber melt inside the piston tube 8 during vibration, and helps the rubber melt to be discharged to the outside of the piston tube 8. The rubber melt that has not been discharged to the outside of the piston tube 8 can be heated again during the normal operation of the injection molding machine, thereby preventing the rubber melt from solidifying inside the piston tube 8 and causing the piston tube 8 to be blocked.

[0054] When the sleeve 6 rotates forward (the injection molding machine is working normally), the external hydraulic driving device (not shown in the attached figure) drives the hydraulic driving plate 55 to move to the right, and the steel ball 42 moves to the left under the pressure of the rubber melt and opens the flow channel inside the check valve 4. Part of the rubber melt in the barrel 1 flows to the left side of the check valve 4 through the flow channel inside the check valve 4. When the external hydraulic driving device drives the hydraulic driving plate 55 to move to the left, the steel ball 42 moves to the right under the pressure of the rubber melt and blocks the flow channel inside the check valve 4. As the check valve 4 moves to the left, the rubber melt can be squeezed into the inside of the nozzle 2 and discharged. Inside the check valve 4, the flow path of the rubber melt inside the check valve 4 is shown in FIG. Fig. 9 Since the conduction of the one-way valve 82 and the one-way valve 83 both have pressure requirements, under the action of the reciprocating screw 7 and the slider 93, the position of the piston tube 8 can be prevented from moving when the injection molding machine is working normally, and the pressure inside the piston tube 8 can be prevented from actively changing. At the same time, since the one-way valve 82 is arranged on the outside of the sleeve 6, and the one-way valve 82 can be blocked to maintain the internal pressure of the piston tube 8, it can further prevent the rubber melt from being pressed into the inside of the piston tube 8 during the discharge process and causing leakage.

[0055] Although embodiments of the present invention have been shown and described, it will be appreciated by those skilled in the art that various changes, modifications, substitutions and variations may be made to the embodiments without departing from the principles and spirit of the present invention, and that the scope of the present invention is defined by the appended claims and their equivalents.

Claims

1. An injection molding machine for producing and processing rubber products, comprising a barrel (1), a nozzle (2), a screw (3), a check valve (4) and a drive assembly (5), characterized in that: The invention also comprises a sleeve (6), a reciprocating screw (7), a piston tube (8), a suction assembly (9), a mounting plate (10), a lever (11), a compacting assembly (12) and a knocking block (13), wherein the sleeve (6) is sleeved inside the screw (3), a placement groove (41) is provided at the right end of the check valve (4), the reciprocating screw (7) is arranged in the placement groove (41) and is axially penetrated, the piston tube (8) is penetrated inside the reciprocating screw (7) and is connected to the nozzle (2), the suction assembly (9) is arranged inside the placement groove (41), and the sleeve (6) is sleeved inside the screw (3), a placement groove (41) is provided at the right end of the check valve (4), the reciprocating screw (7) is arranged in the placement groove (41) and is axially penetrated, the piston tube (8) is penetrated inside the reciprocating screw (7) and is connected to the nozzle (2), the suction assembly (9) is arranged inside the placement groove (41), When the tube (6) is reversed, the suction component (9) drives the piston tube (8) to move back and forth through the reciprocating screw (7), and the rubber melt in the nozzle (2) is pumped into the interior of the sleeve (6) when the piston tube (8) moves back and forth. The mounting plate (10), the lever (11) and the compacting component (12) are all arranged on the sleeve (6), and the knocking block (13) is arranged inside the screw (3) and connected to the compacting component (12). When the sleeve (6) rotates, the compacting component (12) drives the knocking block (13) through the lever (11) to intermittently knock the mounting plate (10).

2. The injection molding machine for producing and processing rubber products according to claim 1, characterized in that: The suction assembly (9) comprises an annular plate 1 (91), an annular plate 2 (92), a slider (93), a U-shaped rod 1 (94), an annular plate 3 (95), a U-shaped rod 2 (96), a guide tube (97) and a bellows (98); the annular plate 1 (91) is arranged at the right end of the check valve (4) and is sleeved with the screw rod (3); the annular plate 2 (92) is arranged at the left end of the placement groove (41) and is sleeved with the reciprocating screw rod (7); the piston tube (8) passes through the sleeve (6) and the reciprocating screw rod (7); the slider (93) is sleeved on the reciprocating screw rod (7) and is connected to the piston tube (8) through the U-shaped rod 1 (94); the annular plate 3 (95) is sleeved on the sleeve (6) and is connected to the piston tube (8) through the U-shaped rod 2 (96); ) is connected to the reciprocating screw rod (7), a steel ball (42) is arranged inside the check valve (4), through grooves (43) are provided on both sides of the steel ball (42), the guide tube (97) penetrates the steel ball (42) and the two through grooves (43), the two bellows (98) are respectively arranged inside the corresponding through grooves (43), the two ends of the guide tube (97) are respectively connected to the corresponding bellows (98), the left end of the piston tube (8) is connected to the corresponding bellows (98), the two ends of the piston tube (8) are provided with rubber plugs (81), the right end of the piston tube (8) is provided with a one-way valve 1 (82), and the left end of the left bellows (98) is provided with a one-way valve 2 (83).

3. The injection molding machine for producing and processing rubber products according to claim 1, characterized in that: The compacting component (12) comprises a counterweight (121), a connecting rod (122), a push block (123) and a spring (124); the counterweight (121) is embedded in the interior of the mounting plate (10); the connecting rod (122) is passed through the interior of the counterweight (121); the knocking block (13) and the push block (123) are respectively arranged at two ends of the connecting rod (122); the push block (123) is arranged in a truncated cone shape; the spring (124) is arranged between the mounting plate (10) and the push block (123) and is sleeved with the connecting rod (122).

4. The injection molding machine for producing and processing rubber products according to claim 3, characterized in that: The number of the shifting rods (11) and the pushing blocks (123) is equal and a plurality of the shifting rods (11) are provided. The plurality of shifting rods (11) are arranged in an array along a spiral direction on the sleeve (6).

5. The injection molding machine for producing and processing rubber products according to claim 3, characterized in that: An arc-shaped connecting plate (125) is provided between two adjacent mounting plates (10), and the arc-shaped connecting plate (125) is provided directly below the corresponding connecting rod (122). The arc-shaped connecting plate (125) is a heating plate, and the heating area is provided at the bottom.

6. The injection molding machine for producing and processing rubber products according to claim 2, characterized in that: The one-way valve 1 (82) and the one-way valve 2 (83) have the same conduction direction, and the diameter of the one-way valve 1 (82) is larger than the diameter of the one-way valve 2 (83).

7. The injection molding machine for producing and processing rubber products according to claim 1, characterized in that: The driving assembly (5) comprises a mounting frame (51), a motor (52), a gear 1 (53) and a gear 2 (54); the mounting frame (51) is sleeved with the screw rod (3); the motor (52) is arranged on the mounting frame (51) and the output end is connected to the gear 1 (53); the gear 2 (54) is meshed with the upper part of the gear 1 (53) and sleeved with the screw rod (3).

8. The injection molding machine for producing and processing rubber products according to claim 7, characterized in that: A hydraulic drive plate (55) is arranged on the mounting frame (51), and the piston tube (8) further comprises a horizontal section (84) and a lead-out section (85), wherein the horizontal section (84) is arranged at the left end of the lead-out section (85), and the radial cross section of the outer contour of the horizontal section (84) is arranged in a rectangular shape, the horizontal section (84) penetrates the hydraulic drive plate (55), and the lead-out section (85) is arranged to be inclined downward.

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