A clamping device for an injection molding machine and an injection molding machine

Abstract

The present invention relates to the technical field of injection molds, and specifically discloses a mold clamping device and an injection molding machine for an injection molding machine, including a fixed mold and a movable mold installed on a mold base, and the movable mold is slidably connected to the mold base through a connecting frame. A power cylinder for driving the movable mold to open and close the mold is provided on the mold base. Sliding frames are respectively slidably connected to both sides of the mold base, and a receiving plate is slidably connected inside the sliding frame through a triggering member. A cleaning brush plate is provided at one end of the sliding frame away from the receiving plate; a top ejection mechanism is provided inside the connecting frame, and an intermittent power mechanism is provided between the sliding frame and the fixed frame. It can clean the fixed mold core, and at the same time, can drive the receiving plate to slide out from inside the sliding frame. During this stroke, the top ejection mechanism is also driven by a driving part to eject the molded workpiece, and cooperate with the receiving plate for blanking, greatly improving the practicability and working efficiency of the mold.

Description

Technical Field

[0001] The present invention relates to the technical field of injection molds, and specifically to a mold clamping device for an injection molding machine and an injection molding machine. Background Art

[0002] Injection molding refers to a process where a molten colloid is injected into a mold cavity under pressure to form a product with a certain shape. The process principle is as follows: solid plastic is melted at a certain melting point, and under the pressure of an injection machine, it is injected into the mold at a certain speed. The mold cools the plastic through a water channel to solidify it, resulting in a product that is the same as the designed mold cavity. The equipment used for injection molding is called an injection molding machine, also known as an injection machine.

[0003] An injection molding machine, also known as an injection forming machine or an injection machine, is the main molding equipment for manufacturing various shaped plastic products using thermoplastic or thermosetting plastics with the help of plastic molding molds. It can be specifically divided into vertical, horizontal, and all-electric types.

[0004] As is well known, an injection molding machine has: a mold part, which includes a fixed mold and a movable mold; a mold clamping mechanism part, which clamps the fixed mold and the movable mold; and an injection mechanism part, which injects a molding material into the cavity between the fixed mold and the movable mold. During operation, the injection molding machine heats the plastic, applies high pressure to the molten plastic, and injects it to fill the mold cavity. When performing product injection molding and product production and processing, first, the mold is clamped and fixed under the action of the mold clamping device, and then injection molding is carried out into the mold cavity through the injection molding machine.

[0005] In the prior art, for example, in a Chinese patent with the application number 202022307278.7, the authorized announcement number CN214056320U, and the name "A Mold Clamping Device for an Injection Molding Machine", the above patent discloses a mold clamping device for an injection molding machine, including a device box. The inner wall of the device box is rotatably connected with an adjustment frame, and the outer wall of the device box is provided with a driving mechanism connected to the adjustment frame. A support column is fixed on the inner wall of the device box, and a moving block is arranged in the device box. The moving block is connected to the support column through a sliding mechanism and is connected to the adjustment frame through an adjustment mechanism. A fixed mold is arranged in the device box. In the above patent, by setting the adjustment mechanism and the sliding mechanism, the position of the nut can be adjusted, and the distance between the adjustment frame and the moving block can be adjusted. By adjusting the distance, the extrusion force of the movable mold can be adjusted to adapt to the injection molding of more products, improving the applicability of the injection molding machine.

[0006] Another example is a Chinese patent with application number 202123317883.3, authorization announcement number CN216914709U, and name "A mold clamping device for an injection molding machine". The above patent discloses a mold clamping device for an injection molding machine, and the front and rear ends of the left surface of the support plate are provided with clamping mechanisms, and the clamping mechanism includes an auxiliary plate, and the auxiliary plate is fixedly connected to the left surface of the left support plate, and the front surface of the rear auxiliary plate is rotatably connected with an auxiliary screw, and is rotatably connected to the front auxiliary plate, and the front side of the front auxiliary plate is provided with a locking motor, and the output end of the locking motor is fixedly connected to the front end of the auxiliary screw, and a moving block is threadedly connected to the auxiliary screw. In the above patent, the auxiliary screw is driven to rotate under the action of the locking motor, and at the same time, a certain force is applied to the locking groove under the action of the arc at the front end of the left surface of the locking block, thereby ensuring that the mold fits tightly during mold clamping.

[0007] In the existing prior art, such as the above-mentioned patent, the injection molding efficiency of the workpiece can be improved to a certain extent. It is known that during the use of the injection mold, the movable mold is usually driven by a driving source to slide toward the side of the fixed mold, and the movable mold stops after sliding to a predetermined position, and the external liquid raw material is injected into the molding cavity formed between the fixed mold and the movable mold. The workpiece is demolded after cooling and molding to obtain the final product. It is known that during the demolding process of the workpiece after the raw material is injected into the molding cavity and cooled and molded, there will be raw material residues left on the movable mold. Therefore, in order to avoid affecting the subsequent injection molding operation of the workpiece, it is necessary to clean the retained residues. The cleaning method in the prior art is that the operator cleans the movable mold in the process of removing the workpiece, but this method has the problem that the operator forgets to clean the movable mold, resulting in the residues on the movable mold affecting the subsequent injection molding operation of the workpiece and affecting the yield rate of the workpiece. At the same time, after the workpiece is cooled and formed, the movable mold and the fixed mold are separated by the driving member, and then the ejection mechanism is used to eject the workpiece inside the molding cavity. At this time, the operator is required to remove the ejected workpiece, or directly eject the workpiece and drop it on the workpiece stacking place in order to improve work efficiency. There is a certain height difference between the known mold and the workpiece stacking place. Therefore, when the workpiece is directly ejected and dropped, there is a possibility that the workpiece will be bumped and damaged due to the high height, which affects the yield rate of the workpiece.

[0008] It can be seen that how to achieve the cleaning operation of the fixed mold during the stroke of the driving member driving the movable mold to open the mold, and also passively provide a buffering effect on the demolded workpiece to improve the yield rate of the workpiece, is a technical problem that needs to be solved urgently. Summary of the invention

[0009] The object of the present invention is to provide a mold clamping device for an injection molding machine and an injection molding machine to solve the problems raised in the above background technology.

[0010] To achieve the above-mentioned purpose, the present invention provides the following technical solutions: a mold clamping device for an injection molding machine, comprising a fixed mold and a movable mold installed on a mold frame, and the movable mold is slidably connected to the mold frame through a connecting frame, and a power cylinder for driving the movable mold to open and close the mold is arranged on the mold frame, and sliding frames are slidably connected to both sides of the mold frame, and a material receiving plate is slidably connected to the inside of the sliding frame through a trigger member, and a cleaning brush plate is arranged at one end of the sliding frame away from the material receiving plate; an ejection mechanism is arranged inside the connecting frame, and a fixed frame is fixedly connected to the movable mold, the ejection mechanism and the fixed frame are transmission-connected by a driving part, and an intermittent power mechanism is arranged between the sliding frame and the fixed frame; the power cylinder drives the movable mold to open the mold, and when the sliding frame is driven by the intermittent power mechanism to drive the cleaning brush plate to clean the movable mold, the material receiving plate is driven to slide out of the sliding frame through the trigger member, and the driving part drives the ejection mechanism to eject the workpiece located inside the movable mold to cooperate with the material receiving plate for workpiece unloading.

[0011] Furthermore, the trigger member includes a first trigger rack slidably connected to the inside of the sliding frame, a second trigger rack is fixedly connected to the material receiving plate, a trigger gear is rotatably connected to the inside of the sliding frame, the first trigger rack and the second trigger rack are respectively engaged with the trigger gear; and a trigger block is fixedly connected to the first trigger rack.

[0012] Furthermore, the intermittent power mechanism includes a reciprocating screw rotatably connected to the mold frame, a threaded sleeve threadedly connected to the reciprocating screw is installed on the sliding frame, and also includes a spur gear, which is installed on the reciprocating screw through an intermittent connection part, and a power rack is fixedly connected to the fixed frame, and the power rack is meshed with the spur gear.

[0013] Furthermore, the intermittent connection part includes a connecting cylinder, and the spur gear is fixedly connected to the connecting cylinder; a connecting rod is fixedly connected to the reciprocating screw, a ratchet is installed on the connecting rod through a base, and a tooth groove is opened on the connecting cylinder, and the ratchet is clamped in the tooth groove.

[0014] Furthermore, the ejection mechanism includes an ejection plate slidably connected to the inside of the connecting frame, a plurality of ejection rods are fixedly connected to the ejection plate, the ejection rods are slidably connected to the movable mold, and a plurality of return springs are arranged between the ejection plate and the movable mold.

[0015] Furthermore, the driving part includes a first driving rack fixedly connected to the fixed frame, the mold frame is also slidably connected to a second driving rack, and the mold frame is rotatably connected to a driving gear through a driving rod, and the first driving rack and the second driving rack are respectively engaged with the upper and lower sides of the driving gear; the second driving rack is fixedly connected to a pressure rod, and the pressure rod abuts against an end of the ejection plate away from the ejection rod.

[0016] Furthermore, a support frame is provided at the bottom of the mold frame, and a conveying component for conveying the workpiece is provided on the support frame; the conveying component includes multiple groups of conveying rollers rotatably connected to the support frame, and a conveyor belt is sleeved between the multiple groups of conveying rollers; the connecting frame is connected to one of the conveying rollers through an intermittent linkage mechanism; when the power cylinder drives the movable mold to open the mold, the conveying roller is driven to rotate through the intermittent linkage mechanism to convey the workpiece that falls on the conveyor belt.

[0017] Furthermore, the intermittent linkage mechanism includes a first connecting cylinder fixedly connected to one of the conveying rollers, the first connecting cylinder is provided with a plurality of wedge-shaped grooves, and also includes a power rod rotatably connected to the mold frame, the power rod is fixedly connected to a second connecting cylinder, the second connecting cylinder is fixedly connected to a plurality of wedge blocks, each wedge block is respectively matched with the corresponding wedge-shaped groove; it also includes an installation cylinder, the power rod is slidably connected to the installation cylinder, and a positioning spring is arranged between the power rod and the installation cylinder, the elastic force of the positioning spring drives each wedge block to be respectively clamped in the corresponding wedge-shaped groove; the installation cylinder is provided with a linkage gear, and a linkage rack meshing with the linkage gear is fixedly connected to the connecting frame.

[0018] Furthermore, a plurality of blocking members are arranged between the movable mold and the mold frame; the blocking members include a pad slidably connected to the inside of the mold frame, a power groove is opened on the pad, and a pressure block is fixedly connected to the fixed frame, and the pressure block intermittently abuts against the power groove.

[0019] An injection molding machine comprises the above-mentioned injection molding machine mold clamping device.

[0020] Compared with the prior art, the beneficial effects of the present invention are as follows: after the injection molding of the workpiece is completed and cooled and molded, when the power cylinder drives the movable mold to open the mold, the intermittent power mechanism drives the sliding frame to slide toward the fixed mold, and the sliding frame drives the cleaning brush plate to abut against the mold core on the fixed mold. As the cleaning brush plate slides, the friction force is used to clean the residue on the fixed mold, and there is no need to manually clean the movable mold, which avoids the residue retained on the mold core of the fixed mold affecting the subsequent injection molding of the workpiece, thereby improving the practicability of the injection mold. During the process of cleaning the fixed mold core with the cleaning brush plate, when the trigger part on the sliding frame abuts against the fixed mold, the material receiving plate is driven to slide out of the sliding frame through the trigger part; and during the process of the cleaning brush plate cleaning the fixed mold core and the material receiving plate sliding out of the sliding frame, the driving part drives the ejection mechanism to eject the workpiece inside the movable mold, and cooperates with the material receiving plate to limit the unloading of the workpiece, thereby avoiding the deviation of the workpiece during unloading, and at the same time, it can have a certain buffering effect on the unloading workpiece, which greatly facilitates the unloading of the workpiece and reduces the collision of the workpiece during the unloading process, thereby greatly improving the yield rate of the workpiece and meeting the work needs.

[0021] Therefore, during the stroke of the moving die being opened by the power cylinder, the mold can clean the fixed die core while driving the material receiving plate to slide out from the inside of the sliding frame. During this stroke, the ejection mechanism is also driven by the driving part to eject the formed workpiece, and cooperate with the material receiving plate to unload the material, greatly improving the practicability and working efficiency of the mold. During this operation process, there is no need to set up a separate driving source and program to control each operating component separately, which is suitable for wide promotion and use. Brief Description of the Drawings

[0022] In order to more clearly illustrate the technical solutions in the embodiments of the present application or the prior art, the following will briefly introduce the drawings required to be used in the embodiments. Obviously, the drawings described below are only some embodiments recorded in the present invention. For those of ordinary skill in the art, other drawings can also be obtained based on these drawings.

[0023] Figure 1 Schematic diagram of the overall internal structure of the mold base provided by the embodiment of the present invention;

[0024] Figure 2 Schematic diagram of another perspective structure of the inside of the mold base provided by the embodiment of the present invention;

[0025] Figure 3 Schematic diagram of the internal structure of the bearing frame provided by the embodiment of the present invention;

[0026] Figure 4 Schematic diagram of the structure of the fixed die in the hidden state provided by the embodiment of the present invention;

[0027] Figure 5 Schematic diagram of the installation method of the blocking member provided by the embodiment of the present invention;

[0028] Figure 6 Schematic diagram of the installation method of the ejection mechanism provided by the embodiment of the present invention;

[0029] Figure 7 Schematic diagram of another state of the ejection mechanism provided by the embodiment of the present invention;

[0030] Figure 8 Schematic diagram of the structure of the driving part provided by the embodiment of the present invention;

[0031] Figure 9 Schematic diagram of the installation method of the intermittent power structure provided by the embodiment of the present invention;

[0032] Figure 10 Schematic diagram of the installation method of the cleaning brush plate provided by the embodiment of the present invention;

[0033] Figure 11 Schematic diagram of the separated state of the material receiving plate and the sliding frame provided by the embodiment of the present invention;

[0034] Figure 12 Schematic diagram of the specific structure of the trigger provided in the embodiment of the present invention;

[0035] Figure 13 Schematic diagram of the intermittent linkage mechanism provided in the embodiment of the present invention;

[0036] Figure 14 Schematic diagram of the overall structure of the mold base provided in the embodiment of the present invention.

[0037] Explanation of reference numerals: 1. Mold base; 2. Moving mold; 3. Fixed mold; 4. Connecting frame; 5. Power cylinder; 6. Carrying frame; 7. Sliding frame; 71. Limiting strip; 8. Intermittent power mechanism; 81. Reciprocating lead screw; 82. Threaded sleeve; 83. Intermittent connecting part; 831. Connecting rod; 832. Ratchet tooth; 833. Tooth groove; 84. Straight gear; 85. Power rack; 9. Material receiving plate; 91. Connecting plate; 10. Cleaning brush plate; 11. Trigger; 111. First trigger rack; 112. Second trigger rack; 113. Trigger gear; 114. Trigger block; 115. Rotating rod; 12. Fixed frame; 13. Ejector rod; 14. Ejector plate; 15. Return spring; 16. Driving part; 161. First driving rack; 162. Second driving rack; 163. Driving gear; 164. Driving rod; 165. Pressing rod; 17. Support frame; 18. Conveyor belt; 19. Intermittent linkage mechanism; 191. First connecting cylinder; 192. Wedge-shaped groove; 193. Second connecting cylinder; 194. Wedge-shaped block; 195. Power rod; 196. Positioning spring; 197. Installation cylinder; 198. Linkage gear; 199. Linkage rack; 20. Pressing block; 21. Pad; 22. Connecting spring. Detailed implementation manners

[0038] Next, the technical solutions in the embodiments of the present invention will be clearly and completely described in conjunction with the accompanying drawings in the embodiments of the present invention. Obviously, the described embodiments are only a part of the embodiments of the present invention, rather than all the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by those of ordinary skill in the art without creative efforts shall fall within the protection scope of the present invention.

[0039] Please refer to Figures 1-14, the present invention provides a technical solution: a clamping device for an injection molding machine, which includes a fixed mold 3 and a movable mold 2 installed on a mold base 1. Specifically, an injection port is opened on the fixed mold 3, and external injection raw materials are conveyed into the mold through a conveying roller until they are conveyed into the fixed mold 3 through the injection port to complete the injection operation of the workpiece and meet the working requirements. And the movable mold 2 is slidably connected to the mold base 1 through a connecting frame 4, which facilitates the sliding of the movable mold 2 to achieve mold opening and closing, and has a better use effect. Among them, a power cylinder 5 for driving the movable mold 2 to open and close is arranged on the mold base 1 to provide power for the sliding of the movable mold 2.

[0040] Sliding frames 7 are respectively slidably connected to both sides of the mold base 1. More specifically, bearing frames 6 are fixedly connected to both sides of the mold base 1. A limiting strip 71 is fixedly connected to the sliding frame 7, and a limiting groove is opened inside the bearing frame 6, and the limiting strip 71 is slidably connected in the limiting groove, so as to improve the stability of the sliding frame 7 during sliding and have a better use effect. The structures and working principles of the two sliding frames 7 are the same. Only one of them will be described here and in the following text, and the other sliding frame 7 is arranged in a mirror image. And a receiving plate 9 is slidably connected inside the sliding frame 7 through a triggering member 11. Specifically, the shape of the receiving plate 9 can be designed according to the working environment requirements, and it can be wedge-shaped. When the sliding frame 7 does not slide, the receiving plate 9 will be located inside the sliding frame 7 to avoid affecting subsequent operations. And an avoidance groove is opened on the sliding frame 7, and the triggering member 11 is installed in the sliding frame 7 through the avoidance groove to meet the working requirements. When the sliding frame 7 slides towards the fixed mold 3, at this time, the receiving plate 9 is driven by the triggering member 11 to slide out of the sliding frame 7, so as to limit the blanking of the workpiece and avoid the situation of the workpiece offset during blanking, which greatly facilitates the blanking of the workpiece.

[0041] A cleaning brush plate 10 is arranged at one end of the sliding frame 7 away from the receiving plate 9. Therefore, when the sliding frames 7 on both sides of the mold base 1 slide towards the fixed mold 3, the sliding frame 7 will drive the cleaning brush plate 10 to abut against the mold core on the fixed mold 3. As the cleaning brush plate 10 slides, the residues on the mold core of the fixed mold 3 are cleaned by using the frictional force, without manual cleaning of the movable mold 2, avoiding the residues remaining on the mold core of the fixed mold 3 from affecting the subsequent injection operation of the workpiece, thereby improving the practicability of the injection mold.

[0042] The connecting frame 4 is provided with an ejection mechanism inside, which is convenient for ejecting the processed workpiece, greatly improving the processing efficiency of the injection mold and achieving better use effect. The movable mold 2 is fixedly connected with a fixing frame 12, and the ejection mechanism is connected to the fixing frame 12 through a driving unit 16. At this moment, when the injection molding of the workpiece is completed, the power member drives the movable mold 2 to open the mold, and the ejection mechanism is driven to eject the workpiece located inside the movable mold 2 through the cooperation between the fixing frame 12 and the driving unit 16. Therefore, compared with the prior art: using a power cylinder 5 to drive the movable mold 2 to slide to a certain stroke and then using a separate driving source to drive the ejection mechanism to eject the workpiece, it can not only reduce the use of the driving source, but also improve the demoulding efficiency of the mold to a certain extent, and also achieve the effect of saving costs.

[0043] An intermittent power mechanism 8 is provided between the sliding frame 7 and the fixed frame 12 to provide power for the sliding of the sliding frame 7. Specifically, the intermittent power mechanism 8 can achieve the following: in the stroke when the power cylinder 5 drives the movable mold 2 and the fixed mold 3 to close the mold, the intermittent power mechanism 8 does not provide power to the sliding frame 7, so the sliding frame 7 does not slide into the movable mold 2. On the contrary, after the injection molding of the workpiece is completed and the mold is cooled and formed, the power cylinder 5 will drive the movable mold 2 to open the mold. At this time, the intermittent power mechanism 8 drives the sliding frame 7 to drive the cleaning brush plate 10 to clean the movable mold 2, and the trigger member 11 drives the receiving plate 9 to slide out of the sliding frame 7, and the driving unit 16 drives the ejection mechanism to eject the workpiece located inside the movable mold 2, so as to cooperate with the receiving plate 9 for unloading the workpiece.

[0044] Specifically, after the workpiece is injection-molded and cooled and formed, when the power cylinder 5 drives the moving mold 2 to open the mold, the intermittent power mechanism 8 drives the sliding frame 7 to slide towards the fixed mold 3. The sliding frame 7 drives the cleaning brush plate 10 to abut against the mold core on the fixed mold 3. As the cleaning brush plate 10 slides, the residues on the fixed mold 3 are cleaned by using the frictional force, eliminating the need for manual cleaning of the moving mold 2 and preventing the residues remaining on the mold core of the fixed mold 3 from affecting the subsequent injection-molding operation of the workpiece, thereby improving the practicality of the injection mold. During the process of the cleaning brush plate 10 cleaning the mold core of the fixed mold 3, when the trigger member 11 on the sliding frame 7 abuts against the fixed mold 3, the receiving plate 9 is driven to slide out of the sliding frame 7 by the trigger member 11 at this moment. Moreover, during the cleaning operation of the cleaning brush plate 10 on the mold core of the fixed mold 3 and the stroke of the receiving plate 9 sliding out of the sliding frame 7, the driving part 16 drives the ejecting mechanism to eject the workpiece located inside the moving mold 2, cooperating with the receiving plate 9, thereby restricting the blanking of the workpiece, avoiding the situation of the workpiece shifting during blanking, and simultaneously having a certain buffering effect on the workpiece, greatly facilitating the blanking of the workpiece while reducing the occurrence of the workpiece being knocked during blanking, and greatly improving the yield rate of the workpiece to meet the work requirements. Therefore, during the stroke of the power cylinder 5 driving the moving mold 2 to open the mold, the mold can clean the mold core of the fixed mold 3, drive the receiving plate 9 to slide out of the sliding frame 7, and also drive the ejecting mechanism to eject the formed workpiece through the driving part 16 during this stroke, cooperating with the receiving plate 9 for blanking, greatly improving the practicality and working efficiency of the mold. During this operation process, there is no need to set up a separate driving source and program to separately control each operating component, making it suitable for wide promotion and use.

[0045] In the embodiments provided by the present invention, the trigger member 11 includes a first trigger rack 111 slidably connected inside the sliding frame 7, and a second trigger rack 112 is fixedly connected to the material receiving plate 9. Specifically, a connecting plate 91 is fixedly connected to the material receiving plate 9, and the second trigger rack 112 is fixedly connected through the connecting plate 91 to improve the stability of the material receiving plate 9 during sliding. A plurality of mounting springs are arranged between the material receiving plate 9 and the sliding frame 7, and the elastic force of the mounting springs urges the material receiving plate 9 to be located inside the sliding frame 7. When there is no external force to urge the material receiving plate 9 away from the sliding frame 7, the elastic force of the mounting springs urges the material receiving plate 9 to retract inside the sliding frame 7, improving the stability of the material receiving plate 9 during installation and meeting the working requirements. Specifically, the meshing mode of the first trigger rack 111 and the second trigger rack 112 is perpendicular, meeting the working requirements. A trigger gear 113 is rotatably connected inside the sliding frame 7, and the first trigger rack 111 and the second trigger rack 112 are respectively meshed with the trigger gear 113. Specifically, the trigger gear 113 is rotatably connected to the sliding frame 7 through a rotating rod 115 to improve the stability of the trigger gear 113 during installation. And a trigger block 114 is fixedly connected to the first trigger rack 111. Therefore, during use, when the mold is driven by the power cylinder 5 to open the moving mold 2, when the sliding frame 7 is driven to slide towards the fixed mold 3 by the intermittent linkage mechanism 19 during the opening stroke, when the trigger block 114 abuts against the fixed mold 3 at this moment, the second trigger rack 112 will be driven to slide through the cooperation between the first trigger rack 111 and the trigger gear 113, and then the material receiving plate 9 can be driven to slide out of the sliding frame 7.

[0046] In the embodiments provided by the present invention, the intermittent power mechanism 8 includes a reciprocating lead screw 81 rotatably connected to the die holder 1. A threaded sleeve 82 threadedly connected to the reciprocating lead screw 81 is installed on the sliding frame 7. It further includes a spur gear 84, and the spur gear 84 is installed on the reciprocating lead screw 81 through an intermittent connection portion 83. A power rack 85 is fixedly connected to the fixed frame 12, and the power rack 85 meshes with the spur gear 84. The intermittent connection portion 83 includes a connecting cylinder, and the spur gear 84 is fixedly connected to the connecting cylinder. A connecting rod 831 is fixedly connected to the reciprocating lead screw 81, and a ratchet 832 is installed on the connecting rod 831 through a base. Specifically, a torsion spring is provided between the ratchet 832 and the base. A tooth groove 833 is formed in the connecting cylinder, and the elastic force of the torsion spring drives the ratchet 832 to be clamped in the tooth groove 833. And a limiting unit is provided between the ratchet 832 and the base, so that the ratchet 832 can only flip in one direction. During the stroke of the power cylinder 5 driving the moving die 2 to close the mold, at this moment, the fixed frame 12 drives the power rack 85 to mesh with the spur gear 84. When the spur gear 84 rotates, the arc surface of the tooth groove 833 abuts against the arc surface of the ratchet 832 at this moment, driving the ratchet 832 to flip. At this moment, the connecting rod 831 cannot be driven to rotate, that is, the reciprocating lead screw 81 cannot rotate at this moment. When the power cylinder 5 drives the moving die 2 to open the mold, at this moment, the power rack 85 drives the spur gear 84 to rotate. At this moment, the tooth groove 833 clamps the ratchet 832 to rotate, and the connecting rod 831 is driven to rotate through the ratchet 832. Therefore, the reciprocating lead screw 81 will rotate. When the reciprocating lead screw 81 rotates, it will drive the sliding frame 7 to slide towards the side close to the fixed die 3, so as to realize the cleaning operation of the fixed die 3 and at the same time cooperate with the ejection mechanism to facilitate the blanking of the workpiece. As the reciprocating lead screw 81 continues to rotate, the sliding frame 7 will be driven to reset to meet the working requirements. The length of the reciprocating lead screw 81 and the pitch of the thread on the reciprocating lead screw 81 can be designed according to the working needs by oneself, which will not be elaborated here. When the power rack 85 drives the spur gear 84 to rotate, the reciprocating lead screw 81 can drive the sliding frame 7 to move back and forth once to meet the working needs.

[0047] In the embodiments provided by the present invention, the ejection mechanism includes an ejection plate 14 slidably connected inside the connecting frame 4. A plurality of ejection rods 13 are fixedly connected to the ejection plate 14. The ejection rods 13 are slidably connected to the moving die 2, and a plurality of return springs 15 are further provided between the ejection plate 14 and the moving die 2. Specifically, an adaptation hole adapted to the ejection rod 13 is formed in the moving die 2. When it is necessary to eject the workpiece, the ejection plate 14 drives the ejection rod 13 to slide inside the moving die 2, and the workpiece will be ejected through the ejection rod 13 to meet the working needs.

[0048] In the embodiment provided by the present invention, the driving part 16 includes a first driving rack 161 fixedly connected to the fixed frame 12, a second driving rack 162 is also slidably connected to the mold frame 1, and a driving gear 163 is rotatably connected to the mold frame 1 through a driving rod 164, and the first driving rack 161 and the second driving rack 162 are respectively meshed on the upper and lower sides of the driving gear 163, and more specifically, the first driving rack 161 is intermittently meshed with the driving gear 163. That is, when the power cylinder 5 drives the movable mold 2 to just open the mold, the first driving rack 161 at this moment is not meshed with the driving gear 163, that is, it cannot drive the second driving rack 162 to slide. When the movable mold 2 slides a certain stroke, the first driving rack 161 at this moment is meshed with the driving gear 163, and then can drive the second rack to slide. The intermittent meshing arrangement of the first driving rack 161 and the driving gear 163 can make the demoulding operation start only after the movable mold 2 and the fixed mold 3 slide to a certain extent, so as to avoid the demoulding operation of the workpiece being affected by the movable mold 2 and the fixed mold 3 being too close. A pressure rod 165 is fixedly connected to the second driving rack 162, and the pressure rod 165 abuts against the end of the ejector plate 14 away from the ejector rod 13. Obviously, when the second rack slides, the ejector plate 14 will be driven to slide through the pressure rod 165, and the ejector plate 14 will drive the ejector rod 13 to slide inside the movable mold 2, and the workpiece will be ejected through the ejector rod 13 to meet the working needs.

[0049] In the embodiment provided by the present invention, a support frame 17 is further provided at the bottom of the mold frame 1, and a conveying component for conveying the workpiece is provided on the support frame 17. The specific conveying component is the prior art and is used to convey the workpiece after molding. The conveying component includes multiple groups of conveying rollers rotatably connected to the support frame 17, and a conveyor belt 18 is sleeved between the multiple groups of conveying rollers; the connecting frame 4 is connected to one of the conveying rollers through an intermittent linkage mechanism 19; when the power cylinder 5 drives the movable mold 2 to open the mold, the conveying roller is driven to rotate through the intermittent linkage mechanism 19 to convey the workpiece falling on the conveyor belt 18. Therefore, the power source for the rotation of the conveyor belt 18 is still provided by the power cylinder 5, and the conveyor belt 18 is only conveyed when the movable mold 2 is opened, which can greatly save energy consumption. When the movable mold 2 is molded with the fixed mold 3, it will not drive the conveyor belt 18 to reverse, thereby improving the practicality of the mold.

[0050] In the embodiment provided by the present invention, the intermittent linkage mechanism 19 includes a first connecting cylinder 191 fixedly connected to one of the conveying rollers. Preferably, this conveying roller is the outermost one on the support frame 17. A plurality of groups of wedge-shaped grooves 192 are formed in the first connecting cylinder 191. Specifically, the wedge-shaped grooves 192 are circumferentially and arrayed with the center of the first connecting cylinder 191 as the axis. It further includes a power rod 195 rotatably connected to the mold base 1. A second connecting cylinder 193 is fixedly connected to the power rod 195. A plurality of groups of wedge-shaped blocks 194 are fixedly connected to the second connecting cylinder 193. Each wedge-shaped block 194 cooperates with the corresponding wedge-shaped groove 192 respectively. It further includes a mounting cylinder 197. The power rod 195 is slidably connected to the mounting cylinder 197. When the mounting cylinder 197 rotates, it will drive the second connecting cylinder 193 to rotate through the power rod 195. And a positioning spring 196 is arranged between the power rod 195 and the mounting cylinder 197. The elastic force of the positioning spring 196 drives each wedge-shaped block 194 to be respectively clamped in the corresponding wedge-shaped groove 192. A linkage gear 198 is arranged on the mounting cylinder 197. And a linkage rack 199 meshing with the linkage gear 198 is fixedly connected to the connecting frame 4. When the moving mold 2 and the fixed mold 3 are clamped, at this moment, the linkage rack 199 drives the linkage gear 198 to rotate, and then can drive the mounting cylinder 197 to rotate. When the mounting cylinder 197 rotates, it will drive the second connecting cylinder 193 to rotate through the power rod 195, and then can drive the second connecting cylinder 193 to rotate. At this moment, when the second connecting cylinder 193 rotates, it drives a plurality of groups of wedge-shaped blocks 194 to rotate. Since at this moment the wedge-shaped blocks 194 are in contact with the wedge-shaped grooves 192 through the wedge-shaped surfaces, it will reversely drive the power rod 195 to slide in the mounting cylinder 197, and obviously cannot drive the first connecting cylinder 191 to rotate. On the contrary, when the moving mold 2 and the fixed mold 3 are opened, through the cooperation between the linkage rack 199 and the linkage gear 198, the second connecting cylinder 193 is driven to rotate. At this moment, the straight edges of the wedge-shaped blocks 194 on the second connecting cylinder 193 are in contact with the straight edges of the wedge-shaped grooves 192, and the first connecting cylinder 191 can be driven to rotate, and then the conveying roller can be driven to rotate, so that when the conveyor belt 18 rotates, the processed workpieces can be conveyed, which is convenient for collecting and storing the formed workpieces, and greatly improves the practicability of the mold.

[0051] In another embodiment provided by the present invention, a plurality of blocking members are further provided between the moving mold 2 and the mold base 1. By providing the blocking members, it can be ensured that the moving mold 2 will stop at a predetermined position each time, so as to ensure that the sizes of the workpieces injected each time are consistent, further meeting the working requirements. The blocking member includes a backing plate 21 slidably connected inside the mold base 1. A power groove is formed on the backing plate 21, and a pressing block 20 is fixedly connected to the fixing frame 12. The pressing block 20 is intermittently abutted against the power groove. Therefore, when the moving mold 2 and the stationary mold 3 are closed, at this time, the fixing frame 12 drives the pressing block 20 to slide. Through the cooperation between the pressing block 20 and the power groove, the backing plate 21 is driven to slide out of the mold base 1 until the moving mold 2 contacts the backing plate 21. Thus, it can further meet the working requirements, make the sliding position of the moving mold 2 within the error range, and meet the working requirements. Moreover, the transmission between the pressing block 20 and the backing plate 21 is realized when the moving mold 2 and the stationary mold 3 are closed, which is an unexpected technical effect. And a connecting spring 22 is provided between the backing plate 21 and the mold base 1 through a convex block. The elastic force of the connecting spring 22 drives the backing plate 21 to retract inside the mold base 1. Therefore, when the moving mold 2 and the stationary mold 3 are opened, the connecting spring 22 drives the backing plate 21 to reset during the process of restoring its elastic deformation.

[0052] Specifically, the present invention also provides an injection molding machine. The injection molding machine includes the above-mentioned injection molding machine clamping device, and the above-mentioned injection molding machine clamping devices are all applicable to this injection molding machine, that is, this injection molding machine should also have the above-mentioned equivalent effects, which will not be elaborated one by one.

[0053] It should be noted that the electrical equipment involved in this application can be powered by a storage battery or an external power supply.

[0054] In the description of the present invention, it should be noted that unless otherwise clearly specified and limited, terms such as "installation", "provided with", "connection", etc. should be understood in a broad sense. For example, "connection" can be a fixed connection, a detachable connection, or an integral connection; it can be a mechanical connection or an electrical connection; it can be directly connected or indirectly connected through an intermediate medium, and it can be the communication inside two components. For those of ordinary skill in the art, the specific meanings of the above terms in the present invention can be understood according to specific situations.

[0055] Although the embodiments of the present invention have been shown and described, for those of ordinary skill in the art, it can be understood that various changes, modifications, substitutions, and variations can be made to these embodiments without departing from the principles and spirit of the present invention. The scope of the present invention is defined by the appended claims and their equivalents.

Claims

1. A mold clamping device for an injection molding machine, comprising a fixed mold (3) and a movable mold (2) mounted on a mold frame (1), wherein the movable mold (2) is slidably connected to the mold frame (1) via a connecting frame (4), and a power cylinder (5) is provided on the mold frame (1) for driving the movable mold (2) to open and close the mold, characterized in that: Sliding frames (7) are slidably connected to both sides of the mold frame (1), and a material receiving plate (9) is slidably connected to the inside of the sliding frame (7) via a trigger member (11). A cleaning brush plate (10) is provided at one end of the sliding frame (7) away from the material receiving plate (9); An ejection mechanism is provided inside the connecting frame (4), and a fixed frame (12) is fixedly connected to the movable mold (2); the ejection mechanism and the fixed frame (12) are transmission-connected via a driving unit (16), and an intermittent power mechanism (8) is provided between the sliding frame (7) and the fixed frame (12); When the injection molding operation is completed, the power cylinder (5) drives the movable mold (2) to open the mold, and the intermittent power mechanism (8) drives the sliding frame to drive the cleaning brush plate (10) to clean the movable mold (2). The trigger member (11) drives the receiving plate (9) to slide out of the sliding frame (7), and the driving part (16) drives the ejection mechanism to eject the workpiece inside the movable mold (2) to cooperate with the receiving plate (9) for unloading the workpiece; The trigger member (11) comprises a first trigger rack (111) slidably connected to the inside of the sliding frame (7); a second trigger rack (112) is fixedly connected to the material receiving plate (9); a trigger gear (113) is rotatably connected to the inside of the sliding frame (7); the first trigger rack (111) and the second trigger rack (112) are respectively meshed with the trigger gear (113); A trigger block (114) is fixedly connected to the first trigger rack (111); The intermittent power mechanism (8) comprises a reciprocating screw (81) rotatably connected to the mold frame (1), and a threaded sleeve (82) threadably connected to the reciprocating screw (81) is mounted on the sliding frame (7); It also includes a spur gear (84), the spur gear (84) being mounted on the reciprocating screw rod (81) via an intermittent connection portion (83), a power rack (85) being fixedly connected to the fixed frame (12), the power rack (85) being meshed with the spur gear (84); The intermittent connection portion (83) comprises a connection cylinder, and a spur gear (84) is fixedly connected to the connection cylinder; A connecting rod (831) is fixedly connected to the reciprocating screw rod (81), a ratchet (832) is mounted on the connecting rod (831) via a base, a tooth groove (833) is formed on the connecting tube, and the ratchet (832) is clamped in the tooth groove (833); The driving part (16) comprises a first driving rack (161) fixedly connected to the fixing frame (12); a second driving rack (162) is slidably connected to the mold frame (1); and a driving gear (163) is rotatably connected to the mold frame (1) via a driving rod (164); the first driving rack (161) and the second driving rack (162) are respectively meshed with the upper and lower sides of the driving gear (163); A pressure rod (165) is fixedly connected to the second driving rack (162), and the pressure rod (165) abuts against an end of the ejection plate (14) away from the ejection rod (13).

2. The mold clamping device of an injection molding machine according to claim 1, characterized in that: The ejection mechanism comprises an ejection plate (14) slidably connected to the interior of the connecting frame (4); a plurality of ejection rods (13) are fixedly connected to the ejection plate (14); the ejection rods (13) are slidably connected to the movable mold (2); and a plurality of return springs (15) are provided between the ejection plate (14) and the movable mold (2).

3. The mold clamping device of an injection molding machine according to claim 1, characterized in that: A support frame (17) is also provided at the bottom of the mold frame (1), and a conveying component for conveying a workpiece is provided on the support frame (17); The conveying component comprises a plurality of conveying rollers rotatably connected to a support frame (17), a conveying belt (18) being sleeved between the plurality of conveying rollers, and the connecting frame (4) is transmission-connected to one of the conveying rollers via an intermittent linkage mechanism (19); When the power cylinder (5) drives the movable mold (2) to open the mold, the intermittent linkage mechanism (19) drives the conveying roller to rotate to convey the workpiece that falls on the conveyor belt (18).

4. The mold clamping device of an injection molding machine according to claim 3, characterized in that: The intermittent linkage mechanism (19) comprises a first connecting tube (191) fixedly connected to one of the conveying rollers, and the first connecting tube (191) is provided with a plurality of groups of wedge-shaped grooves (192); It also includes a power rod (195) rotatably connected to the mold frame (1), the power rod (195) being fixedly connected to a second connecting cylinder (193), the second connecting cylinder (193) being fixedly connected to a plurality of groups of wedge blocks (194), each wedge block (194) being respectively matched with a corresponding wedge groove (192); It also includes a mounting cylinder (197), the power rod (195) is slidably connected to the mounting cylinder (197), and a positioning spring (196) is provided between the power rod (195) and the mounting cylinder (197), and the elastic force of the positioning spring (196) drives each wedge block (194) to be respectively clamped in the corresponding wedge groove (192); The mounting cylinder (197) is provided with a linkage gear (198), and the connecting frame (4) is fixedly connected with a linkage rack (199) meshing with the linkage gear (198).

5. The mold clamping device of an injection molding machine according to claim 1, characterized in that: A plurality of groups of blocking members are also arranged between the movable mold (2) and the mold frame (1); The blocking member comprises a pad (21) slidably connected to the inside of the mold frame (1), a power groove is provided on the pad (21), and a pressure block (20) is fixedly connected to the fixed frame (12), and the pressure block (20) is intermittently abutted against the power groove.

6. An injection molding machine, characterized in that: The invention comprises the mold clamping device of an injection molding machine according to any one of claims 1 to 5.

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