Safety protection device of injection molding machine and injection molding machine

Abstract

The utility model discloses a safety protection device of an injection molding machine and the injection molding machine, and relates to the technical field of injection molding equipment, the injection molding machine comprises a machine body and a mold closing device arranged on the machine body; the safety protection device comprises a detection mechanism and a control mechanism; the detection mechanism comprises a plurality of detection modules, and the multiple detection modules are arranged on the machine body at intervals in the circumferential direction of the machine body; the detection module is used for outputting a detection signal when a human body is detected in a mold closing area provided with the mold closing device; the control mechanism is electrically connected with the mold closing device and the detection mechanism respectively; and the control mechanism is used for controlling the mold closing device to stop mold closing when receiving the detection signal. According to the utility model, the technical problem that personnel are accidentally injured in the process of debugging and testing running of the existing injection molding machine in a workshop can be solved.

Description

Technical Field

[0001] The utility model relates to the technical field of injection molding equipment, in particular to a safety protection device for an injection molding machine and an injection molding machine. Background Art

[0002] Before the injection molding machine leaves the factory, it needs to be debugged and tested in the workshop to ensure its performance. However, during the debugging or testing process, there is generally no sheet metal installed around the injection molding machine, which easily leads to the following two safety hazards: First, when debugging in the workshop, the debugger needs to observe whether there are other assemblers in the mold closing area before closing the mold, but the injection molding machine is large and the line of sight is easily restricted; or, remind other assemblers by shouting, but the noise in the workshop is very loud, and other assemblers may not hear the prompt sound, and it is inevitable that the mold is closed when there are other assemblers in the mold closing area, resulting in accidental injuries; second, when the tester tests the injection molding machine, he generally leaves the sight of the machine after turning on the full-automatic test mode. In the absence of sheet metal, other assemblers may mistakenly enter the mold closing area during the continuous running of the machine and cause accidental injuries. Utility Model Content

[0003] The main purpose of the utility model is to provide a safety protection device for an injection molding machine and an injection molding machine, aiming to solve the technical problem of accidental injury to personnel during workshop debugging and test running of the existing injection molding machine.

[0004] To achieve the above object, the utility model provides a safety protection device for an injection molding machine, the injection molding machine comprising a machine body and a mold clamping device arranged on the machine body, the safety protection device comprising:

[0005] The detection mechanism comprises a plurality of detection modules, wherein the plurality of detection modules are arranged on the machine body at intervals along the circumference of the machine body; the detection module is used to output a detection signal when a human body is detected in the mold clamping area where the mold clamping device is provided;

[0006] The control mechanism is electrically connected to the mold clamping device and the detection mechanism respectively; the control mechanism is used to control the mold clamping device to stop mold clamping when receiving the detection signal.

[0007] In one embodiment, the machine body has four equidistantly arranged corner areas, and four detection modules are provided. The four detection modules are arranged one-to-one at the four corner areas of the machine body.

[0008] In one embodiment, the detection module includes at least one of an electromagnetic induction module, a camera module, an ultrasonic detection module, a microwave detection module, and an infrared detection module.

[0009] In one embodiment, the safety protection device further comprises:

[0010] A self-locking circuit, connected in series in the loop between the control mechanism and the mold clamping device;

[0011] The control mechanism is used to control the self-locking circuit to self-lock when receiving the detection signal, so as to keep the mold clamping device in a stopped mold clamping state.

[0012] In one embodiment, the self-locking circuit comprises:

[0013] Relay, including normally open contacts and energized coil;

[0014] A reset button, comprising a normally closed contact, wherein the normally open contact, the normally closed contact and the energized coil are sequentially connected in series, and the detection mechanism is connected in parallel to both ends of the normally open contact;

[0015] The control mechanism is used to control the normally open contact to close when receiving a detection signal, so that the normally open contact, the normally closed contact and the energized coil form a self-locking circuit.

[0016] In one embodiment, the normally closed contact is configured to open when triggered to disconnect the circuit between the normally open contact and the energized coil.

[0017] In one embodiment, the safety protection device further comprises:

[0018] A protective member is arranged around the body, and the protective member is provided with a door body for a human body to pass through. A sensing mechanism is arranged on the door body, and the sensing mechanism is electrically connected to the control mechanism. When the sensing mechanism senses a human body, it outputs a corresponding sensing signal to the control mechanism.

[0019] In one embodiment, the safety protection device further comprises:

[0020] The warning mechanism is electrically connected to the control mechanism; the control mechanism is used to control the warning mechanism to issue a warning when receiving a detection signal.

[0021] In one embodiment, the safety protection device further comprises:

[0022] A wireless communication mechanism is electrically connected to the control mechanism; the control mechanism is used to establish a wireless communication connection with an external terminal via the wireless communication mechanism.

[0023] In addition, to achieve the above-mentioned purpose, the utility model also proposes an injection molding machine, which includes the safety protection device of the injection molding machine as described above, and the injection molding machine establishes a wireless communication connection with an external terminal through a wireless communication mechanism.

[0024] In the technical solution of the utility model, a plurality of detection modules are arranged on the body of the injection molding machine. During the debugging or testing of the injection molding machine, the plurality of detection modules are used to detect in real time the mold clamping area of ​​the injection molding machine provided with a mold clamping device. When at least one of the plurality of detection modules detects a human body in the mold clamping area, a corresponding detection signal is output to the control mechanism. The control mechanism controls the mold clamping device of the injection molding machine to stop mold clamping in time according to the received detection signal, thereby reducing the occurrence of accidental injuries to the human body by the mold clamping device, thereby overcoming the technical defect of the existing injection molding machine inadvertently injuring personnel during the workshop debugging and testing of the running machine, and playing a protective role for the human body. BRIEF DESCRIPTION OF THE DRAWINGS

[0025] The accompanying drawings herein are incorporated in and constitute a part of the specification, illustrate embodiments consistent with the present utility model, and together with the description, are used to explain the principles of the present utility model.

[0026] In order to more clearly illustrate the technical solutions in the embodiments of the utility model or the prior art, the drawings required for use in the embodiments or the description of the prior art will be briefly introduced below. Obviously, for ordinary technicians in this field, other drawings can be obtained based on these drawings without paying any creative labor.

[0027] Figure 1 This is a schematic structural diagram of an embodiment of the injection molding machine of the utility model;

[0028] Figure 2 This is a schematic diagram of the circuit structure of an embodiment of the safety protection device of the utility model;

[0029] Figure 3 This is a schematic diagram of the circuit structure of an embodiment of a self-locking circuit in a safety protection device of the utility model;

[0030] Figure 4 This is a schematic diagram of a circuit function module of an embodiment of the safety protection device of the utility model;

[0031] Figure 5 This is a schematic diagram of a circuit function module of an embodiment of an injection molding machine of the utility model.

[0032] Description of Figure Numbers:

[0033] 100. Injection molding machine; 1. Machine body; 11. Corner area; 2. Mold clamping device; 3. Safety protection device; 31. Detection mechanism; 311. Detection module; 32. Control mechanism; 33. Self-locking circuit; KA, relay; KA1, normally open contact; KA2 energized coil; SB, reset button; SB1, normally closed contact; 34. Induction mechanism; 35. Warning mechanism; 36. Wireless communication mechanism; 200. Terminal.

[0034] The purpose, features and advantages of the present invention will be further described in conjunction with the embodiments and with reference to the accompanying drawings. DETAILED DESCRIPTION

[0035] It should be understood that the specific embodiments described herein are only used to explain the technical solutions of the present invention and are not used to limit the present invention.

[0036] In order to better understand the technical solution of the present utility model, a detailed description will be given below in conjunction with the accompanying drawings and specific implementation methods.

[0037] It is understandable that before the injection molding machine leaves the factory, it needs to be debugged and tested in the workshop to ensure its performance. However, during the debugging or testing process, there is generally no sheet metal installed around the injection molding machine, which easily leads to the following two safety hazards: First, when debugging in the workshop, the debugger needs to observe whether there are other assemblers in the mold closing area before closing the mold, but the injection molding machine is large and the line of sight is easily restricted; or, remind other assemblers by shouting, but the noise in the workshop is very loud, and other assemblers may not hear the prompt sound, and it is inevitable that the mold is closed when there are other assemblers in the mold closing area, resulting in accidental injuries; second, when the tester tests the injection molding machine, he generally leaves the sight of the machine after turning on the full-automatic test mode. In the absence of sheet metal, other assemblers may mistakenly enter the mold closing area during the continuous running of the machine and cause accidental injuries.

[0038] In order to solve the above problems, the utility model proposes a safety protection device 3 of an injection molding machine 100, which is applied to the injection molding machine 100 and aims to solve the technical problem of accidental injury to personnel during workshop debugging and testing of the existing injection molding machine.

[0039] See also Figure 1 , Figure 2 and Figure 4 , Figure 1 It is a structural schematic diagram of an embodiment of the injection molding machine 100 of the utility model. Figure 2 This is a schematic diagram of the circuit structure of an embodiment of the safety protection device 3 of the injection molding machine 100 of the utility model. Figure 4 It is a schematic diagram of a circuit function module of an implementation mode of the safety protection device 3 of the injection molding machine 100 of the utility model.

[0040] In an embodiment of the utility model, the injection molding machine 100 may include but is not limited to a machine body 1 and a clamping device 2. An injection device is arranged on the machine body 1. As the core part of the injection molding machine 100, the injection device mainly consists of a plastic feeding component, a plastic melting component and an injection component. The plastic feeding component is used to convey plastic particles or powder to the plastic melting component, and the plastic melting component melts the plastic into an injectable molten state by heating and stirring, and the injection component is used to inject the molten plastic into the mold cavity. The clamping device 2 is arranged on the machine body 1 to ensure that the mold remains in a closed state during the injection process. Specifically, after the mold is closed, the clamping device 2 provides sufficient clamping force to resist the pressure generated by the molten plastic entering the mold cavity, prevent the mold from opening, and cause defective products; when the plastic in the mold has been finalized, the clamping device 2 cancels the clamping force to keep the mold in an open state to take out the finished product.

[0041] Since sheet metal protection parts are generally not installed around the injection molding machine 100 during debugging or testing, other assemblers may mistakenly enter the mold clamping area and be accidentally injured by the working mold clamping device 2. Even if sheet metal protection parts are installed, other assemblers may inadvertently enter the mold clamping area through the door body opened by the sheet metal protection parts and be accidentally injured by the working mold clamping device 2.

[0042] To improve this situation, in the embodiment of the present utility model, please refer to Figure 1 , Figure 2 and Figure 4 , the injection molding machine 100 also includes a safety protection device 3. Optionally, the safety protection device 3 may include but is not limited to a control mechanism 32 and a detection mechanism 31 electrically connected to the control mechanism 32. The control mechanism 32 serves as the control center of the safety protection device 3 and is mainly used to control the detection mechanism 31 for detection. Optionally, the control mechanism 32 may be implemented by a control element such as a controller or an MCU. In an embodiment of the utility model, the control mechanism 32 is implemented by an MCU, which is generally small in size, and can reduce the size of the safety protection device 3, making it easier to install on the machine body 1. In order to achieve multi-directional detection of the machine body 1, the detection mechanism 31 includes a plurality of detection modules 311, and the detection module 311 may include at least one of an electromagnetic induction module, a camera module, an ultrasonic detection module, a microwave detection module, and an infrared detection module. In an embodiment of the utility model, the detection module 311 is implemented only by an infrared detection module. The infrared detection module is specifically a human infrared sensor, and the type of the human infrared sensor may be an active infrared sensor or a passive infrared sensor, which is not specifically limited here. A plurality of human infrared sensors are separately arranged on the machine body 1 and are spaced apart along the circumference of the machine body 1 to perform multi-directional detection on the mold clamping area of ​​the mold clamping device 2 .

[0043] It should be emphasized that each human infrared sensor has its own detection area. For example, when one of the human infrared sensors is installed in the first corner of the body 1, it detects whether there is a human body in the mold area corresponding to the first corner. When another human infrared sensor is installed in the second corner of the body 1, it detects whether there is a human body in the mold area corresponding to the second corner. The detection situations of other human infrared sensors are similar to the above situations, and will not be repeated here.

[0044] In actual application, when at least one of the multiple human infrared sensors detects a human body in the corresponding mold clamping area, that is, when there is at least one human body in the mold clamping area of ​​the mold clamping device 2, the human infrared sensor outputs a corresponding detection signal to the control mechanism 32. The control mechanism 32 controls the mold clamping device 2 to stop mold clamping in time according to the received detection signal, thereby reducing the occurrence of accidental injury to the human body by the mold clamping device 2 and protecting the human body.

[0045] In the technical solution of the utility model, a plurality of detection modules 311 are arranged on the body 1 of the injection molding machine 100. During the debugging or testing of the injection molding machine 100, the plurality of detection modules 311 are used to detect in real time the clamping area of ​​the injection molding machine 100 provided with the clamping device 2. When at least one of the plurality of detection modules 311 detects a human body in the clamping area, a corresponding detection signal is output to the control mechanism 32. The control mechanism 32 controls the clamping device 2 of the injection molding machine 100 to stop clamping in time according to the received detection signal, thereby reducing the occurrence of accidental injuries to the human body by the clamping device 2. This overcomes the technical defect of the existing injection molding machine 100 that there is accidental injury to personnel during the workshop debugging and testing of the running machine, and plays a protective role for the human body.

[0046] The number of the detection modules 311 is generally not limited. In order to reduce the probability of the mold clamping device 2 accidentally injuring a human body, in the embodiment of the utility model, please refer to Figure 1 The machine body 1 is in a rectangular structure as a whole, and has four equally spaced corner areas 11. Correspondingly, four detection modules 311 are provided, and the four detection modules 311 are arranged one-to-one in the four corner areas 11 of the machine body 1. In this way, the four detection modules 311 can detect different sub-areas of the mold clamping area at the same time, and feed back the detection conditions of different sub-areas to the control mechanism 32, so that the control mechanism 32 controls the mold clamping device 2 to stop mold clamping in time according to the detection conditions of different sub-areas, so as to avoid accidental injury to the human body due to the existence of visual blind spots, and reduce the probability of accidental injury to the human body by the mold clamping device 2.

[0047] Based on the above embodiment, the connection between the detection module 311 and the body 1 can be a fixed connection or a detachable connection. When the detection module 311 is fixedly installed on the body 1, the stability of the detection module 311 installed on the body 1 can be improved due to the fixed relationship; when the detection module 311 is detachably installed on the body 1, due to the detachable relationship, when the detection module 311 is damaged, the detection module 311 can be removed from the body 1 for maintenance or replacement.

[0048] In order to effectively control the mold clamping device 2 to stop the mold clamping, in the embodiment of the present utility model, please refer to Figure 2 and Figure 4 The injection molding machine 100 further includes a self-locking circuit 33. The self-locking circuit 33 is composed of switching elements such as an intermediate relay. The self-locking circuit 33 is connected in series in the circuit of the control mechanism 32 and the mold clamping device 2. Specifically, the first end of the self-locking circuit 33 is connected to the control mechanism 32, and the second end of the self-locking circuit 33 is connected to the mold clamping device 2. When the control mechanism 32 receives the detection signal, it controls the mold clamping device 2 to stop clamping, and controls the self-locking circuit 33 to self-lock, so as to lock the mold clamping device 2 in a stopped mold clamping state, thereby ensuring the safety of the human body.

[0049] There are many ways to implement the self-locking circuit 33. Figure 3 and Figure 4 ,in Figure 3 It is a circuit structure diagram of an implementation of the self-locking circuit 33 in the safety protection device 3 of the utility model. The self-locking circuit 33 includes a relay KA and a reset button SB. The relay KA is specifically an intermediate relay, which is also called a voltage relay, such as an electromagnetic voltage relay and a static voltage relay, etc., which are not specifically limited here. The relay KA includes a normally open contact KA1 and an energized coil KA2; the reset button SB includes a normally closed contact SB1, and the normally open contact KA1, the normally closed contact SB1 and the energized coil KA2 are sequentially connected in series in the loop between the control mechanism 32 and the mold clamping device 2. The detection mechanism 31 is connected in parallel to both ends of the normally open contact KA1. When the control mechanism 32 receives the detection signal, it controls the mold clamping device 2 to stop the mold clamping through the self-locking loop, and controls the normally open contact KA1 to close, so that the normally open contact KA1, the normally closed contact SB1 and the energized coil KA2 constitute a self-locking loop to lock the mold clamping device 2 in the stopped mold clamping state, to avoid the position change of the mold clamping device 2 and cause accidental injury to the human body, and reduce the probability of accidental injury.

[0050] After the human body leaves the mold clamping area, the normally closed contact SB1 of the reset button SB can be triggered to disconnect the circuit between the normally open contact KA1 and the energized coil KA2, so that the mold clamping device 2 is no longer locked in the stop mold clamping state, which facilitates the next mold clamping or opening action.

[0051] In order to improve the protection performance for the human body, in the embodiments of the present utility model, please refer to Figure 5 , the safety protection device 3 also includes a protective part. The protective part is specifically a sheet metal part. The sheet metal part is arranged around the body 1 to isolate the processing workshop into a mold clamping area and a non-mold clamping area. In order to facilitate the human body to enter the mold clamping area to obtain the processed products, the protective part is provided with a door body for the human body to pass through, and the door body is provided with a sensing mechanism 34 electrically connected to the control mechanism 32. The sensing mechanism 34 can be implemented by an induction switch, wherein the induction switch can be an infrared induction switch, a microwave induction switch, an ultrasonic induction switch, a piezoelectric induction switch, an electromagnetic induction switch, and a capacitive induction switch, which are not specifically limited here. When the induction switch senses the human body, it outputs a corresponding induction signal to the control mechanism 32. At this time, the control mechanism 32 controls the mold clamping device 2 to stop the mold clamping according to the received induction signal to ensure the safety of the human body after entering the mold clamping area.

[0052] Based on the above embodiment, in order to better remind other assembly personnel in the workshop of the current working status of the injection molding machine 100, in the embodiment of the present utility model, refer to Figure 5 , the safety protection device 3 also includes a warning mechanism 35, and the warning mechanism 35 is electrically connected to the control mechanism 32. Optionally, the warning mechanism 35 may include at least one of an indicator light and a buzzer. In the embodiment of the utility model, taking the warning mechanism 35 including an indicator light and a buzzer as an example, when the control mechanism 32 receives the detection signal, in addition to controlling the mold clamping device 2 to stop mold clamping, the control mechanism 32 also controls the light color of the indicator light to switch from green to red, and controls the buzzer to emit a buzzing sound, thereby issuing a safety warning to other assembly personnel, thereby reducing the occurrence of accidental injuries to the human body by the mold clamping device 2.

[0053] To achieve remote control, in the embodiment of the present utility model, please refer to Figure 5 , the safety protection device 3 also includes a wireless communication mechanism 36, and the wireless communication mechanism 36 is electrically connected to the control mechanism 32. Optionally, the wireless communication mechanism 36 may include at least one of a WiFi communication mechanism, a 3G / 4G / 5G communication mechanism, and a Bluetooth mechanism. In an embodiment of the utility model, taking the wireless communication mechanism 36 as a WiFi communication mechanism as an example, when the control mechanism 32 receives a detection signal, the control mechanism 32 not only controls the mold clamping device 2 to stop the mold clamping, but also feeds back a corresponding signal to the external terminal 200 through the WiFi communication mechanism, so that the external terminal 200 displays the corresponding message information according to the feedback signal, for the debugging or testing personnel in front of the external terminal 200 to view, so that the debugging or testing personnel can remind the assemblers in the mold clamping area through external tools, thereby also playing a role in human protection.

[0054] The utility model also proposes an injection molding device, see Figure 5 The injection molding equipment includes an injection molding machine 100 and a terminal 200. The specific structure of the injection molding machine 100 refers to the above embodiment. Since the injection molding equipment 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.

[0055] The above descriptions are only some embodiments of the present invention, and do 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 safety protection device for an injection molding machine, the injection molding machine comprising a machine body and a mold clamping device arranged on the machine body, characterized in that: The safety protection device comprises: The detection mechanism comprises a plurality of detection modules, wherein the plurality of detection modules are arranged on the machine body at intervals along the circumference of the machine body; the detection module is used to output a detection signal when a human body is detected in the mold clamping area where the mold clamping device is provided; The control mechanism is electrically connected to the mold clamping device and the detection mechanism respectively; the control mechanism is used to control the mold clamping device to stop mold clamping when receiving the detection signal.

2. The safety protection device for an injection molding machine according to claim 1, characterized in that: The machine body has four equidistantly arranged corner areas, and four detection modules are provided. The four detection modules are arranged one-to-one at the four corner areas of the machine body.

3. The safety protection device for an injection molding machine according to claim 1, characterized in that: The detection module includes at least one of an electromagnetic induction module, a camera module, an ultrasonic detection module, a microwave detection module, and an infrared detection module.

4. The safety protection device for an injection molding machine according to claim 1, characterized in that: The safety protection device also includes: A self-locking circuit, connected in series in the loop between the control mechanism and the mold clamping device; The control mechanism is used to control the self-locking circuit to self-lock when receiving the detection signal, so as to keep the mold clamping device in a stopped mold clamping state.

5. The safety protection device for an injection molding machine according to claim 4, characterized in that: The self-locking circuit comprises: Relay, including normally open contacts and energized coil; A reset button, comprising a normally closed contact, wherein the normally open contact, the normally closed contact and the energized coil are sequentially connected in series, and the detection mechanism is connected in parallel to both ends of the normally open contact; The control mechanism is used to control the normally open contact to close when receiving a detection signal, so that the normally open contact, the normally closed contact and the energized coil form a self-locking loop.

6. The safety protection device for an injection molding machine according to claim 5, characterized in that: The normally closed contact is used to open when triggered to disconnect the circuit between the normally open contact and the energized coil.

7. The safety protection device for an injection molding machine according to claim 1, characterized in that: The safety protection device also includes: A protective member is arranged around the body, and the protective member is provided with a door body for a human body to pass through. A sensing mechanism is arranged on the door body, and the sensing mechanism is electrically connected to the control mechanism. When the sensing mechanism senses a human body, it outputs a corresponding sensing signal to the control mechanism.

8. The safety protection device for an injection molding machine according to claim 1, characterized in that: The safety protection device also includes: The warning mechanism is electrically connected to the control mechanism; the control mechanism is used to control the warning mechanism to issue a warning when receiving a detection signal.

9. The safety protection device for an injection molding machine according to claim 1, characterized in that: The safety protection device also includes: A wireless communication mechanism is electrically connected to the control mechanism; the control mechanism is used to establish a wireless communication connection with an external terminal via the wireless communication mechanism.

10. An injection molding machine, characterized in that: The injection molding machine comprises the safety protection device for the injection molding machine as claimed in any one of claims 1 to 9, and the injection molding machine establishes a wireless communication connection with an external terminal via a wireless communication mechanism.

Images