Multi-module injection molding machine

Abstract

The utility model discloses a multi-module injection molding machine, which relates to the field of injection molding machines, and comprises a support frame, the top of the support frame is provided with a moving mechanism, the moving mechanism comprises a slide rail, the slide rail is fixedly connected to the upper surface of the support frame, the inner wall of the slide rail is slidably connected with a first slide block, and the first slide block is fixedly connected with the support frame. A first sliding block is slidably connected to the inner wall of the sliding rail, a second sliding block is slidably connected to the inner wall of the sliding rail, the first sliding block and the second sliding block are symmetrically distributed, a third sliding block is slidably connected to the inner wall of the sliding rail, and through the arranged moving mechanism, when a servo motor is started, a ball screw rotates to drive the corresponding sliding block to transversely and precisely move along the sliding rail, and then the injection module is driven to adjust the position; the requirement for butt joint with different injection molding openings is met, meanwhile, independent control over the two modules on a linear rail is achieved, the two parallel modules do not need to wait, injection molding production of main colors and matched colors is achieved at the same time, the equipment utilization rate is increased, and the situation that the production cycle is prolonged and cost is increased due to sequential injection of a traditional single module is avoided.

Description

TECHNICAL FIELD

[0001] The utility model relates to injection molding machine field, especially in multiple module injection molding machine. BACKGROUND

[0002] With the development of various industries, such as automobile, electronic, medical industry, the requirement of plastic products is higher and higher, need to produce a variety of colors, a variety of material combination, complex structure and function of plastic products, the traditional single component injection molding machine cannot satisfy these needs, prompting the research and application of multiple module injection molding machine.

[0003] In the prior art, in the injection molding machine design, usually equipped with a single injection module, but in the actual use process, the design of this single module has limitations, for example, in the face of a variety of color injection demand, due to the injection amount and injection time of different color plastics are different, single injection module can only be sequentially injection operation, leading to long production cycle, difficult to meet the needs of efficient production, in addition, in the processing of long time injection and short time color injection scene, single injection module cannot be taken into account at the same time, so that the utilization rate of equipment is low, the production cost increases.

[0004] Therefore, it is necessary to provide a multiple module injection molding machine to solve the above problems. UTILITY MODEL CONTENTS

[0005] The utility model aims at providing multiple module injection molding machine to solve the problem of low efficiency and utilization rate of traditional single module injection molding machine in the scene of multicolor injection and long and short time injection.

[0006] In order to achieve the above object, the utility model provides the following technical scheme: multiple module injection molding machine, including support frame, the top of support frame is provided with moving mechanism;

[0007] The moving mechanism comprises a sliding rail, the sliding rail is fixedly connected to the upper surface of the support frame, the inner wall of the sliding rail is slidably connected with a first sliding block, the inner wall of the sliding rail is slidably connected with a second sliding block, the first sliding block and the second sliding block are symmetrically distributed, the inner wall of the sliding rail is slidably connected with a third sliding block, the inner wall of the sliding rail is slidably connected with a fourth sliding block, the third sliding block and the fourth sliding block are symmetrically distributed, the upper surface of the first sliding block, the second sliding block, the third sliding block and the fourth sliding block is fixedly connected with a fixing frame, the side wall of the sliding rail is fixedly connected with a first servo motor, the output end of the first servo motor is fixedly connected with a first ball screw, the side wall of the fourth sliding block is provided with a first through hole, the first ball screw passes through the first through hole, the first sliding block is threadedly connected to the outside of the first ball screw, the side wall of the sliding rail is fixedly connected with a second servo motor, the output end of the second servo motor is fixedly connected with a second ball screw, the side wall of the second sliding block is provided with a second through hole, the second ball screw passes through the second through hole, the third sliding block is threadedly connected to the outside of the second ball screw, the upper surface of the sliding rail is fixedly connected with a friction top frame, the inside of the first sliding block and the fourth sliding block is provided with a first through slot, a friction block is slidably connected in the first through slot, and one end, away from the friction top frame, of the friction block is rotatably connected with a connecting rod.

[0008] Preferably, the moving mechanism is externally provided with an injection mechanism, the injection mechanism comprises a first hydraulic cylinder, the first hydraulic cylinder is fixedly connected to the inner side of the side wall of the fixing frame, the output end of the first hydraulic cylinder is fixedly connected with a second hydraulic cylinder, the lower surface of the second hydraulic cylinder is fixedly connected with an injection bin, the lower surface of the injection bin is fixedly connected with an injection head, the inner wall of the injection bin is slidably connected with an extrusion column, the extrusion column is fixedly connected to the output end of the second hydraulic cylinder, one side, away from the fixing frame, of the injection bin is fixedly connected with a conveying pipe, the upper surface of the conveying pipe is fixedly connected with a feeding pipe, the inner wall of the conveying pipe is rotatably connected with a spiral conveying blade, one side, away from the injection bin, of the conveying pipe is fixedly connected with a driving motor, the spiral conveying blade is fixedly connected to the output end of the driving motor, and the outside of the conveying pipe is fixedly connected with a heating sleeve pipe.

[0009] Preferably, one end, away from the friction block, of the connecting rod is rotatably connected to one side, away from the conveying pipe, of the second hydraulic cylinder.

[0010] Preferably, the outside of the support frame is fixedly connected with a fixed mold frame.

[0011] Preferably, the upper surface of the fixed mold frame is provided with an injection port, and the size of the injection port is matched with the size of the injection head.

[0012] The technical effects and advantages of the utility model are as follows:

[0013] 1. The utility model discloses a moving mechanism is set up, when servo motor starts, the ball screw rotates can drive corresponding slider along the slide rail horizontal accurate movement, and then drive injection module adjustment position, satisfy the butt joint demand with different injection port, realize the independent control of two groups of modules on linear rail simultaneously, and two groups of parallel modules do not need to wait, realize the injection production of main color and collocation color simultaneously, equipment utilization rate promotes, avoids the production cycle extension and cost increase caused by traditional single module injection in turn, and the utility model discloses a plurality of injection modules are arranged on the linear rail, and the injection module is connected with the linear rail through the moving mechanism, and the moving mechanism is connected with the servo motor, and the servo motor is connected with the control system, and the control system is connected with the injection module.

[0014] 2. And utilize injection mechanism, start drive motor, drive spiral conveying blade rotation, melt raw material in conveying pipe is transported to injection bin, and drive motor stops after reaching the preset injection amount, start second hydraulic cylinder, push extrusion column and raw material are injected into injection port through injection head at high pressure, complete single single color injection.

[0015] 3. And when the first hydraulic cylinder drives the second hydraulic cylinder and injection head to move downwards, will drive connecting rod to move downwards simultaneously, push friction block and friction top frame inner wall closely, the position of slider is fixed firmly through friction, avoid the deviation of injection module when high pressure injection, ensure the positioning accuracy of two groups of parallel modules when working alternately or cooperatively, guarantee the stability of injection quality. ACCURACY

[0016] Figure 1 It is the appearance structure schematic drawing of the utility model multi -module injection molding machine.

[0017] Figure 2 It is the appearance structure schematic drawing of the utility model multi -module injection molding machine.

[0018] Figure 3 It is the left side structure schematic drawing of the utility model moving mechanism and injection mechanism.

[0019] Figure 4 It is the left side structure schematic drawing of the utility model moving mechanism and injection mechanism.

[0020] Figure 5 It is the left side structure schematic drawing of the utility model Figure 4 It is the left side structure schematic drawing of the utility model

[0021] Figure 6 It is the left side structure schematic drawing of the utility model

[0022] Figure 7 It is the left side structure schematic drawing of the utility model

[0023] Figure 8 It is the left side structure schematic drawing of the utility model Figure 7 It is the left side structure schematic drawing of the utility model

[0024] In the figure: 1, support frame; 2, moving mechanism; 3, injection mechanism; 4, fixed mold frame; 5, injection port; 21, slide rail; 22, first servo motor; 23, second servo motor; 24, friction top frame; 25, first sliding block; 26, first ball screw; 27, fixed frame; 28, connecting rod; 29, friction block; 210, second sliding block; 211, second ball screw; 212, third sliding block; 213, fourth sliding block; 31, first hydraulic cylinder; 32, second hydraulic cylinder; 33, injection bin; 34, injection head; 35, extrusion column; 36, conveying pipe; 37, drive motor; 38, feed pipe; 39, spiral conveying blade; 310, heating sleeve pipe. DETAILED DESCRIPTION

[0025] The utility model provides a multi -mode injection molding machine as Figures 1-8 The utility model discloses a multi -mode injection molding machine as shown in the figure, to solve the problem of low efficiency and utilization of traditional single -mode injection molding machine in the multicolor injection molding, long short time injection scene, mainly by support frame 1, moving mechanism 2, injection mechanism 3, fixed mold frame 4 is constituted, and each structure cooperatively realizes efficient injection production.

[0026] Support frame 1 is the basic bearing structure of the whole equipment, and the core role is to provide stable installation platform and rigid support for moving mechanism 2 and fixed mold frame 4.

[0027] The moving mechanism 2 is installed on the top of the support frame 1, and is the key to realize flexible deployment and accurate positioning of the two groups of parallel linearly arranged injection modules. The moving mechanism 2 mainly comprises a sliding rail 21, a first servo motor 22, a second servo motor 23, a first ball screw 26, a second ball screw 211, a first sliding block 25 and a second sliding block 210, a third sliding block 212 and a fourth sliding block 213, a friction top frame 24, a friction block 29, a connecting rod 28 and a fixing frame 27. The sliding rail 21 is fixed on the upper surface of the support frame 1, and provides a horizontal sliding track for the first to fourth sliding blocks. The fixing frame 27 on the upper surface of the sliding block is directly connected with the injection mechanism 3, and serves as a carrier for moving the injection module. The first sliding block 25 and the second sliding block 210 are symmetrically distributed, and the third sliding block 212 and the fourth sliding block 213 are symmetrically distributed, and each carries a group of parallel linearly arranged injection modules, so that the modules can move independently or cooperatively in the linear direction, and adapt to the requirement of reserving space for the left module to slide to the leftmost standby position and the right module to slide to the rightmost standby position. The first servo motor 22 and the second servo motor 23 are fixed on the two side walls of the sliding rail 21, and the output ends thereof are connected with the first ball screw 26 and the second ball screw 211, respectively. The first sliding block 25 is threadedly connected to the outside of the first ball screw 26, and the fourth sliding block 213 is sleeved with the first ball screw 26 through a first through hole in the side wall. The third sliding block 212 is threadedly connected to the outside of the second ball screw 211, and the second sliding block 210 is sleeved with the second ball screw 211 through a second through hole in the side wall. When the servo motor is started, the rotation of the ball screw can drive the corresponding sliding block to move horizontally and accurately along the sliding rail 21, thereby driving the injection module to adjust the position and meet the docking requirement with different injection ports 5, and realizing independent control of the two modules on the linear track, thereby providing a moving basis for single-color injection alternating work and long-short time injection cooperation.

[0028] The friction top frame 24 fixed on the upper surface of the sliding rail 21 cooperates with the friction block 29 in the first through slot in the first sliding block 25 and the fourth sliding block 213 to form a positioning structure. One end of the friction block 29 away from the friction top frame 24 is rotationally connected with the second hydraulic cylinder 32 of the injection mechanism 3 through the connecting rod 28. When the first hydraulic cylinder 31 drives the second hydraulic cylinder 32 and the injection head 34 to move downward, the connecting rod 28 is also driven to move downward, the friction block 29 is pushed to tightly abut against the inner wall of the friction top frame 24, the position of the sliding block is fixed by the friction force, the injection module is prevented from deviating during high-pressure injection, the positioning accuracy of the two parallel modules during alternating or cooperative work is ensured, and the stability of the injection quality is ensured.

[0029] The injection mechanism 3 is the core execution unit for completing raw material melting, quantitative conveying and high-pressure injection, two sets of injection mechanisms 3 are arranged in parallel and linearly on the fixed frame 27 of the moving mechanism 2, each set corresponds to an independent injection molding system, which comprises a first hydraulic cylinder 31, a second hydraulic cylinder 32, an injection bin 33, an injection head 34, an extrusion column 35, a conveying pipe 36, a driving motor 37, a feeding pipe 38, a spiral conveying blade 39 and a heating sleeve 310, the first hydraulic cylinder 31 is fixed to the inner side of the side wall of the fixed frame 27, the output end is connected with the second hydraulic cylinder 32, so as to drive the second hydraulic cylinder 32 and the injection bin 33 and the injection head 34 below to move longitudinally, thereby realizing the height precise butt joint of the injection head 34 and the injection port 5 of the fixed mold frame 4; the lower surface of the second hydraulic cylinder 32 is connected with the injection bin 33, the output end of the second hydraulic cylinder 32 extends into the injection bin 33 and is connected with the extrusion column 35, when the raw material enters the injection bin 33, the second hydraulic cylinder 32 can push the extrusion column 35 to inject the raw material into the injection port 5 through the injection head 34 at high pressure, the conveying pipe 36 is fixed to the side of the injection bin 33 away from the fixed frame 27, the feeding pipe 38 above can be connected with the plastic raw material, the feeding pipes 38 of the two sets of injection mechanisms 3 can be connected with different color raw materials respectively, thereby directly solving the problem of frequent material replacement required by multi-color injection molding; the heating sleeve 310 (and the specific structure and principle of the heating sleeve 310 are prior art, and thus will not be described in detail) outside the conveying pipe 36 can uniformly heat the raw material in the pipe, so as to ensure that the raw material reaches the melting flow state required for injection molding; the driving motor 37 is fixed to the end of the conveying pipe 36 away from the injection bin 33, the output end of the driving motor 37 is connected with the spiral conveying blade 39 in the pipe, when the driving motor 37 drives the spiral conveying blade 39 to rotate, the melting raw material can be quantitatively conveyed to the injection bin 33, the injection amount is controlled, and the difference requirements of injection amount and injection time of different color plastics are met.

[0030] The fixed mold frame 4 is fixed outside the support frame 1 and is the installation carrier of the plastic part mold, and the core function is to provide a stable working environment for the mold and ensure that the mold position is not deviated during injection molding, the injection port 5 is arranged on the upper surface of the fixed mold frame 4 and is completely matched with the injection head 34 in size, so that the injection head 34 and the injection port 5 can be sealed and butt jointed, and raw material leakage is avoided; meanwhile, the injection ports 5 are distributed linearly along the transverse direction of the fixed mold frame 4 and correspond to the movement paths of the two sets of parallel injection modules.

[0031] In the use process, the control mode of the utility model is controlled by manually starting and closing the switch, the wiring diagram of the power element and the power supply belong to the public knowledge in the field, and the utility model is mainly used for protecting the mechanical device, so the control mode and the wiring arrangement of the utility model will not be explained in detail, the control mode of the utility model is automatically controlled by the controller, the control circuit of the controller can be realized by simple programming of the technical personnel in the field, the power supply also belongs to the public knowledge in the field, and the utility model is mainly used for protecting the mechanical device, so the control mode and the circuit connection of the utility model will not be explained in detail.

[0032] The second hydraulic cylinder 32 and the first hydraulic cylinder 31 have a self-locking function for locking the stop position.

[0033] In combination with the core requirements of multi-color injection molding and long-short time injection cooperation, the use process of the left module A and the right module B is divided into "single-color injection standby mode" and "long-short time injection cooperation mode".

[0034] The single-color injection standby mode is used to reduce the module switching waiting time. This mode is suitable for batch production of single-color plastic parts. Through the "one group working and one group standby" mode, the traditional single-module downtime and preheating time are avoided. The specific steps are as follows: according to the production requirements, the feed pipe 38 of the left module A and the right module B is connected to the target single-color raw material; the heating sleeve pipe 310 of the two injection mechanisms 3 is started to preheat and melt the raw material in the conveying pipe 36. The preheating temperature is set according to the characteristics of the raw material; at the same time, the mold corresponding to the single-color plastic part is installed on the fixed mold frame 4 to ensure the precise communication between the injection port 5 and the mold cavity.

[0035] The right module B works and the left module A is on standby: the second servo motor 23 of the moving mechanism 2 is started, and the second ball screw 211 is driven to rotate by the second servo motor 23. Since the third sliding block 212 is threadedly connected with the second ball screw 211, the second sliding block 210 and the third sliding block 212 of the bearing module B are driven to slide leftward along the slide rail 21 until the injection head 34 of the bearing module B is horizontally aligned with the first group of injection ports 5 on the left side of the fixed mold frame 4; the first hydraulic cylinder 31 is started to push the second hydraulic cylinder 32, the injection chamber 33 and the injection head 34 to move downward, and the connecting rod 28 is simultaneously driven to move downward, so that the friction block 29 is tightly attached to the inner wall of the friction top frame 24 to fix the module B position, and the injection head 34 and the injection port 5 are sealed and connected.

[0036] The module A is on standby and the first servo motor 22 is started at the same time to drive the first ball screw 26 to rotate and drive the first sliding block 25 and the fourth sliding block 213 of the bearing module A to slide along the slide rail 21 to the leftmost reserved space; at the same time, the heating sleeve pipe 310 is kept in the preheating state, so that the module A is in the standby state of "raw material melting completed and ready to inject" to avoid wasting time in re-preheating during subsequent switching.

[0037] Module B injection production, start the drive motor 37 of module B, drive the spiral conveying blade 39 to rotate, conveying the molten raw material in the conveying pipe 36 to the injection bin 33, stop the drive motor 37 when the preset injection amount is reached; start the second hydraulic cylinder 32, push the extrusion column 35 to inject the raw material into the injection port 5 through the injection head 34 at high pressure, complete single-color injection; after injection, the first hydraulic cylinder 31 drives the injection bin 33 to rise, the injection head 34 is separated from the injection port 5, the second servo motor 23 is driven in reverse, and the module B is moved to the next group of injection ports 5, and the injection step is repeated.

[0038] Left module A works, right module B is on standby: when the right module B completes injection of all injection ports 5 in the left area, the second servo motor 23 drives module B to slide along the slide rail 21 to the rightmost reserved space, and is fixed and kept preheated by the friction block 29 and the friction top frame 24; start the first servo motor 22, drive module A to slide along the slide rail 21 to the right, and sequentially butt joint with the injection ports 5 in the right area of the fixed mold frame 4, repeat the injection process of module B, realize the alternating work of two groups of modules, no waiting during the whole process, greatly shorten the production cycle of single-color plastic parts.

[0039] And in the scene of "long-time injection of main color and short-time injection of color matching", the two groups of parallel modules cooperate to realize "continuous injection of main color + injection of color matching", the specific steps are: left module A starts long-time injection, starts the first servo motor 22, drives module A to slide along the slide rail 21 to the right, first butt joint with the injection port 5 at the rightmost side of the fixed mold frame 4; start the first hydraulic cylinder 31, drive the injection head 34 to butt joint with the injection port 5 downward, synchronously drive the friction block 29 to adhere to the friction top frame 24 to fix the position through the connecting rod 28, and when module A completes the rightmost injection and moves to the middle main color injection port 5, module B moves to the rightmost idle injection port 5 for injection; through the cooperative mode of "module A long-time injection of main color from right to left in sequence, and module B cyclic injection at idle color matching station", two groups of parallel modules can realize the injection production of main color and color matching without waiting, improve the utilization rate of equipment, and avoid the production cycle extension and cost increase caused by traditional single-module injection in sequence.

Claims

1. A multi-module injection molding machine, comprising a support frame (1), characterized in that: The top of the support frame (1) is provided with a moving mechanism (2); The moving mechanism (2) includes a slide rail (21), which is fixedly connected to the upper surface of the support frame (1). A first slider (25) is slidably connected to the inner wall of the slide rail (21), and a second slider (210) is slidably connected to the inner wall of the slide rail (21). The first slider (25) and the second slider (210) are symmetrically distributed. A third slider (212) is slidably connected to the inner wall of the slide rail (21), and a fourth slider (213) is slidably connected to the inner wall of the slide rail (21). The third slider (212) and the fourth slider (213) are symmetrically distributed. A fixing frame (27) is fixedly connected to the upper surfaces of the first slider (25), the second slider (210), the third slider (212), and the fourth slider (213). A first servo motor (22) is fixedly connected to the side wall of the slide rail (21), and a first ball screw (26) is fixedly connected to the output end of the first servo motor (22). The fourth slider (213) has a first through hole on its side wall. The first ball screw (26) passes through the first through hole. The first slider (25) is threaded to the outside of the first ball screw (26). The side wall of the slide rail (21) is fixedly connected to a second servo motor (23). The output end of the second servo motor (23) is fixedly connected to a second ball screw (211). The side wall of the second slider (210) has a second through hole. The second ball screw (211) passes through the second through hole. The third slider (212) is threaded to the outside of the second ball screw (211). The upper surface of the slide rail (21) is fixedly connected to a friction top frame (24). The first slider (25) and the fourth slider (213) both have a first through groove inside. A friction block (29) is slidably connected inside the first through groove. A connecting rod (28) is rotatably connected to the end of the friction block (29) away from the friction top frame (24).

2. The multi-module injection molding machine according to claim 1, characterized in that: An injection mechanism (3) is provided outside the moving mechanism (2). The injection mechanism (3) includes a first hydraulic cylinder (31), which is fixedly connected to the inner side wall of the fixed frame (27). A second hydraulic cylinder (32) is fixedly connected to the output end of the first hydraulic cylinder (31). An injection chamber (33) is fixedly connected to the lower surface of the second hydraulic cylinder (32). An injection head (34) is fixedly connected to the lower surface of the injection chamber (33). An extrusion column (35) is slidably connected to the inner wall of the injection chamber (33). The extrusion column (35) is fixedly connected to... Connected to the output end of the second hydraulic cylinder (32), the side of the injection chamber (33) away from the fixed frame (27) is fixedly connected to a conveying pipe (36), the upper surface of the conveying pipe (36) is fixedly connected to a feed pipe (38), the inner wall of the conveying pipe (36) is rotatably connected to a spiral conveying blade (39), the side of the conveying pipe (36) away from the injection chamber (33) is fixedly connected to a drive motor (37), the spiral conveying blade (39) is fixedly connected to the output end of the drive motor (37), and the outside of the conveying pipe (36) is fixedly connected to a heating sleeve (310).

3. The multi-module injection molding machine according to claim 2, characterized in that: The end of the connecting rod (28) away from the friction block (29) is rotatably connected to the side of the second hydraulic cylinder (32) away from the delivery pipe (36).

4. The multi-module injection molding machine according to claim 3, characterized in that: The support frame (1) is externally fixedly connected to a fixed mold frame (4).

5. The multi-module injection molding machine according to claim 4, characterized in that: The upper surface of the fixed mold frame (4) is provided with an injection port (5), and the size of the injection port (5) matches the size of the injection head (34).

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