Mold closing device of injection molding machine and injection molding machine

Abstract

The invention relates to the technical field of injection molds, and particularly discloses a mold closing device of an injection molding machine and the injection molding machine. The mold closing device comprises a fixed mold and a movable mold which are installed on a mold frame, the movable mold is in sliding connection with the mold frame through a connecting frame, and a power air cylinder used for driving the movable mold to open and close is arranged on the mold frame; sliding frames are slidably connected to the two sides of the mold frame correspondingly, a material receiving plate is slidably connected to the interiors of the sliding frames through triggering pieces, and a cleaning brush plate is arranged at the end, away from the material receiving plate, of each sliding frame. An ejection mechanism is arranged in the connecting frame, and an intermittent power mechanism is arranged between the sliding frame and the fixing frame. According to the mold, the fixed mold core can be cleaned, meanwhile, the material receiving plate can be driven to slide out from the interior of the sliding frame, in the stroke, the ejection mechanism is driven by the driving part to eject a formed workpiece, discharging is conducted in cooperation with the material receiving plate, and the practicability and the working efficiency of the mold are greatly improved.

Description

Technical Field

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

[0002] Injection molding refers to a model with a certain shape, which is formed by injecting a molten colloid into a mold cavity through pressure. The process principle is: melt the solid plastic at a certain melting point, inject it into the mold at a certain speed through the pressure of the injection machine, and the mold is cooled by water channels to solidify the plastic to obtain a product that is the same as the designed mold cavity. The equipment that uses injection molding is called an injection molding machine, also known as an injection molding machine.

[0003] Injection molding machine, also known as injection molding machine or injection machine, is the main molding equipment that uses plastic molding molds to make plastic products of various shapes from thermoplastics or thermosetting plastics. It can be divided into vertical, horizontal and all-electric types.

[0004] As is known, the injection molding machine has: a mold part, which includes a fixed mold and a movable mold; a mold clamping mechanism part, which performs mold clamping of the fixed mold and the movable mold; and an injection mechanism part, which injects the molding material into the cavity between the fixed mold and the movable mold. When working, the injection molding machine will heat the plastic, apply high pressure to the molten plastic, so that it will be ejected and fill the mold cavity. When performing product injection molding, when performing product production and processing, the mold is first clamped and fixed under the action of the mold clamping device, and then injection molding is performed into the mold cavity through the injection molding machine.

[0005] In the prior art, there is a Chinese patent with application number 202022307278.7, authorization announcement number CN214056320U, and name "A clamping device for injection molding machine". The above patent discloses a clamping device for injection molding machine, including a device box, the inner wall of the device box is rotatably connected with an adjustment frame, the outer wall of the device box is provided with a driving mechanism connected to the adjustment frame, the inner wall of the device box is fixed with a support column, a moving block is provided in the device box, the moving block is connected to the support column through a sliding mechanism, the moving block is connected to the adjustment frame through an adjustment mechanism, and a fixed mold is provided in the device box. In the above patent, the position of the nut can be adjusted by setting an adjustment mechanism and a sliding mechanism, the distance between the adjustment frame and the moving block can be adjusted, and the extrusion force of the movable mold can be adjusted by adjusting the distance to adapt to the injection molding of more products, thereby 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] To this end, during the stroke in which the power cylinder drives the movable mold to open the mold, the mold can not only clean the fixed mold core, but also drive the receiving plate to slide out from the inside of the sliding frame. During this stroke, the driving part also drives the ejection mechanism to eject the formed workpiece, and cooperates with the receiving plate to unload the material, thereby greatly improving the practicality and work efficiency of the mold. During this operation, there is no need to set up a separate driving source and program to separately control each operating component, which is suitable for wide promotion and use. BRIEF DESCRIPTION OF THE DRAWINGS

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

[0023] Figure 1 A schematic diagram of the overall internal structure of a mold frame provided by an embodiment of the present invention;

[0024] Figure 2 A schematic diagram of the structure of the mold frame from another perspective provided by an embodiment of the present invention;

[0025] Figure 3 A schematic diagram of the internal structure of a carrier frame provided by an embodiment of the present invention;

[0026] Figure 4 A schematic diagram of a structure in a fixed mold hidden state provided by an embodiment of the present invention;

[0027] Figure 5 A schematic diagram of the structure of the installation method of the blocking member provided in an embodiment of the present invention;

[0028] Figure 6 A schematic diagram of the structure of the ejection mechanism installation method provided in an embodiment of the present invention;

[0029] Figure 7 A schematic diagram of another state structure of the ejection mechanism provided by an embodiment of the present invention;

[0030] Figure 8 A schematic diagram of the structure of a driving unit provided by an embodiment of the present invention;

[0031] Fig. 9 A schematic diagram of the installation method of the intermittent power structure provided by an embodiment of the present invention;

[0032] Fig.10 A schematic diagram of the structure of the cleaning brush plate installation method provided in an embodiment of the present invention;

[0033] Fig.11 A schematic diagram of the structure of the material receiving plate and the sliding frame in a separated state provided by an embodiment of the present invention;

[0034] Fig.12 A schematic diagram of the specific structure of a trigger provided by an embodiment of the present invention;

[0035] Fig.13 A schematic diagram of the intermittent linkage mechanism structure provided by an embodiment of the present invention;

[0036] Fig.14 A schematic diagram of the overall structure of a mold frame provided in an embodiment of the present invention.

[0037] Explanation of reference numerals: 1, mold frame; 2, movable mold; 3, fixed mold; 4, connecting frame; 5, power cylinder; 6, bearing frame; 7, sliding frame; 71, limit bar; 8, intermittent power mechanism; 81, reciprocating screw rod; 82, threaded sleeve; 83, intermittent connecting part; 831, connecting rod; 832, ratchet; 833, tooth groove; 84, spur gear; 85, power rack; 9, receiving plate; 91, connecting plate; 10, cleaning brush plate; 11, trigger member; 111, first trigger rack; 112, second trigger rack; 113, trigger gear; 114, trigger block; 115, rotating rod; 12, fixed plate; Fixed frame; 13. Ejector rod; 14. Ejector plate; 15. Return spring; 16. Driving unit; 161. First driving rack; 162. Second driving rack; 163. Driving gear; 164. Driving rod; 165. Pressure rod; 17. Support frame; 18. Conveyor belt; 19. Intermittent linkage mechanism; 191. First connecting cylinder; 192. Wedge groove; 193. Second connecting cylinder; 194. Wedge block; 195. Power rod; 196. Positioning spring; 197. Mounting cylinder; 198. Linkage gear; 199. Linkage rack; 20. Pressure block; 21. Pad; 22. Connecting spring. DETAILED DESCRIPTION

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

[0039] See also Figure 1-Figure 14The present invention provides a technical solution: a mold clamping device for an injection molding machine, which includes a fixed mold 3 and a movable mold 2 installed on a mold frame 1. Specifically, an injection port is provided on the fixed mold 3, and the external injection molding material is transported to the inside of the mold through a conveying roller until it is transported to the inside of the fixed mold 3 through the injection port, thereby completing the injection molding of the workpiece and meeting the work needs. The movable mold 2 is slidably connected to the mold frame 1 through a connecting frame 4, which facilitates the sliding of the movable mold 2 to open and close the mold, and the use effect is better. A power cylinder 5 for driving the movable mold 2 to open and close the mold is provided on the mold frame 1 to provide power for the sliding of the movable mold 2.

[0040] The two sides of the mold frame 1 are respectively connected with sliding frames 7 in a sliding manner. More specifically, the two sides of the mold frame 1 are fixedly connected with a bearing frame 6. The sliding frame 7 is fixedly connected with a limiting strip 71. A limiting groove is provided inside the bearing frame 6, wherein the limiting strip 71 is slidably connected in the limiting groove, thereby improving the stability of the sliding frame 7 when sliding, and achieving a better use effect. The structures and working principles of the two sliding frames 7 are consistent. Only one of them is described here and below, and the other sliding frame 7 is set in a mirror image. A material receiving plate 9 is slidably connected to the inside of the sliding frame 7 through a trigger member 11. Specifically, the shape of the material receiving plate 9 can be designed according to the needs of the working environment, and it can be a wedge shape. When the sliding frame 7 does not slide, the material receiving plate 9 will be located inside the sliding frame 7 to avoid affecting subsequent operations. A avoidance groove is provided on the sliding frame 7, and the trigger member 11 is installed in the sliding frame 7 through the avoidance groove to meet the working needs. When the sliding frame 7 slides toward the fixed mold 3, the trigger member 11 drives the receiving plate 9 to slide out of the sliding frame 7, thereby limiting the unloading of the workpiece, avoiding deviation during unloading of the workpiece, and greatly facilitating the unloading of the workpiece.

[0041] A cleaning brush plate 10 is provided 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 frame 1 slide toward one side of the fixed mold 3, the sliding frames 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 friction force is used to clean the residue on the mold core of the fixed mold 3. There is no need to manually clean the movable mold 2, which can prevent the residue retained on the mold core of the fixed mold 3 from affecting the subsequent injection molding 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 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, and the intermittent power mechanism 8 will drive the sliding frame 7 to slide toward the side of the fixed mold 3, and 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 friction force is used to clean the residue on the fixed mold 3. There is no need to manually clean the movable mold 2, which can avoid the residue retained on the mold core of the fixed mold 3 affecting the subsequent injection molding operation of the workpiece, thereby improving the practicability of the injection mold. During the process of cleaning the mold core of the fixed mold 3 by the cleaning brush plate 10, when the trigger member 11 on the sliding frame 7 abuts against the fixed mold 3, the material receiving plate 9 is driven to slide out of the sliding frame 7 by the trigger member 11; and during the process of the cleaning brush plate 10 cleaning the mold core of the fixed mold 3 and the material receiving plate 9 sliding out of the sliding frame 7, the driving unit 16 drives the ejection mechanism to eject the workpiece located inside the movable mold 2, and cooperates with the material receiving plate 9 to limit the unloading of the workpiece, thereby avoiding the deviation of the workpiece during unloading, and at the same time having a certain buffering effect on the workpiece, which greatly facilitates the unloading of the workpiece while reducing the collision of the workpiece during the unloading process, greatly improving the yield rate of the workpiece to meet work needs. To this end, during the stroke in which the power cylinder 5 drives the movable mold 2 to open the mold, the mold can clean the mold core of the fixed mold 3 and drive the receiving plate 9 to slide out from the inside of the sliding frame 7. During this stroke, the driving unit 16 drives the ejection mechanism to eject the formed workpiece, and cooperates with the receiving plate 9 to unload the material, thereby greatly improving the practicality and work efficiency of the mold. During this operation, there is no need to set up a separate driving source and program to separately control each operating component, which is suitable for wide promotion and use.

[0045] In the embodiment provided by the present invention, the trigger member 11 includes a first trigger rack 111 slidably connected to the inside of the sliding frame 7, and a second trigger rack 112 is fixedly connected to the receiving plate 9. Specifically, a connecting plate 91 is fixedly connected to the receiving plate 9, and the connecting plate 91 is fixedly connected to the second trigger rack 112, thereby improving the stability of the receiving plate 9 when sliding. A plurality of sets of mounting springs are arranged between the receiving plate 9 and the sliding frame 7, wherein the elastic force of the mounting springs drives the receiving plate 9 to be located inside the sliding frame 7. When there is no external force driving the receiving plate 9 away from the sliding frame 7, the elastic force of the mounting springs drives the receiving plate 9 to retract inside the sliding frame 7, thereby improving the stability of the receiving plate 9 when installed and meeting working requirements. Specifically, the meshing mode of the first trigger rack 111 and the second trigger rack 112 is vertical, thereby meeting 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, which improves the stability of the trigger gear 113 when it is installed. A trigger block 114 is fixedly connected to the first trigger rack 111. Therefore, when the mold is in use, when the power cylinder 5 drives the movable mold 2 to open the mold, when the intermittent linkage mechanism 19 drives the sliding frame 7 to slide toward the fixed mold 3, the trigger block 114 at this moment abuts against the fixed mold 3, and then the first trigger rack 111 and the trigger gear 113 cooperate to drive the second trigger rack 112 to slide, thereby driving the receiving plate 9 to slide out of the sliding frame 7.

[0046] In the embodiment provided by the present invention, the intermittent power mechanism 8 includes a reciprocating screw 81 rotatably connected to the mold frame 1, a threaded sleeve 82 threadedly connected to the reciprocating screw 81 is installed on the sliding frame 7, and also includes a spur gear 84, which is installed on the reciprocating screw 81 through an intermittent connection part 83, and a power rack 85 is fixedly connected to the fixed frame 12, and the power rack 85 is meshed with the spur gear 84. The intermittent connection part 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 screw 81, and a ratchet 832 is installed on the connecting rod 831 through a base, and a torque spring is specifically provided between the ratchet 832 and the base, and a tooth groove 833 is provided on the connecting cylinder, and the elastic force of the torque spring drives the ratchet 832 to be clamped in the tooth groove 833. A limited position unit is provided between the ratchet 832 and the base, so that the ratchet 832 can only flip in one direction. In the stroke of the power cylinder 5 driving the movable mold 2 to close the mold, the power rack 85 is driven to mesh with the spur gear 84 through the fixed frame 12 at this moment. When the spur gear 84 rotates, the arc surface of the tooth groove 833 at this moment abuts against the arc surface of the ratchet 832, driving the ratchet 832 to flip, and the connecting rod 831 cannot be driven to rotate at this moment, that is, the reciprocating screw 81 at this moment cannot rotate. When the power cylinder 5 drives the movable mold 2 to open the mold, the power rack 85 drives the spur gear 84 to rotate at this moment. At this moment, the tooth groove 833 is clamped and connected to the ratchet 832 to rotate, and the connecting rod 831 is driven to rotate through the ratchet 832, so the reciprocating screw 81 will rotate. When the reciprocating screw 81 rotates, it will drive the sliding frame 7 to slide to the side close to the fixed mold 3, so as to realize the cleaning operation of the fixed mold 3 and cooperate with the ejection mechanism to facilitate the unloading of the workpiece. With the continuous rotation of the reciprocating screw 81, the sliding frame 7 will be driven to reset to meet the work needs. The length of the reciprocating screw 81 and the pitch of the thread on the reciprocating screw 81 can be designed according to work needs, and will not be elaborated here. When the power rack 85 drives the spur gear 84 to rotate, the reciprocating screw 81 can drive the sliding frame 7 to move back and forth to meet work needs.

[0047] In the embodiment provided by the present invention, the ejection mechanism includes an ejection plate 14 slidably connected to the inside of the connecting frame 4, multiple groups 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 multiple groups of return springs 15 are also arranged between the ejection plate 14 and the movable mold 2. Specifically, an adapter hole adapted to the ejection rod 13 is provided on the movable mold 2. When the workpiece needs to be ejected, the ejection plate 14 drives the ejection rod 13 to slide inside the movable mold 2, and the workpiece is ejected by 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, the conveying roller is located at the outermost one of the support frame 17. The first connecting cylinder 191 is provided with multiple groups of wedge-shaped grooves 192. Specifically, the wedge-shaped grooves 192 are distributed in a circular array with the center of the first connecting cylinder 191 as the axis. It also includes a power rod 195 rotatably connected to the mold frame 1, and a second connecting cylinder 193 is fixedly connected to the power rod 195. Multiple groups of wedge blocks 194 are fixedly connected to the second connecting cylinder 193, and each wedge block 194 is respectively matched with the corresponding wedge groove 192. It also includes a mounting cylinder 197, and the power rod 195 is slidably connected to the mounting cylinder 197. When the mounting cylinder 197 rotates, the second connecting cylinder 193 is driven to rotate through the power rod 195. A positioning spring 196 is provided between the power rod 195 and the installation cylinder 197. The elastic force of the positioning spring 196 drives each wedge block 194 to be respectively engaged in the corresponding wedge groove 192. A linkage gear 198 is provided on the installation cylinder 197, and a linkage rack 199 meshing with the linkage gear 198 is fixedly connected to the connecting frame 4. When the movable mold 2 and the fixed mold 3 are molded, the linkage rack 199 drives the linkage gear 198 to rotate, and then drives the installation cylinder 197 to rotate. When the installation cylinder 197 rotates, it will drive the second connecting cylinder 193 to rotate through the power rod 195, and then the second connecting cylinder 193 can rotate. At this moment, when the second connecting cylinder 193 rotates, it drives multiple groups of wedge blocks 194 to rotate. Since the wedge blocks 194 are in contact with the wedge groove 192 by the wedge surface at this moment, they will drive the power rod 195 to slide in the installation cylinder 197 in the opposite direction, and obviously cannot drive the first connecting cylinder 191 to rotate. On the contrary, when the movable mold 2 and the fixed mold 3 are opened, the second connecting cylinder 193 is driven to rotate through the cooperation between the linkage rack 199 and the linkage gear 198. At this moment, the straight edge of the wedge block 194 on the second connecting cylinder 193 abuts against the straight edge of the wedge groove 192, which can drive the first connecting cylinder 191 to rotate, and then drive the conveying roller to rotate, so that the conveyor belt 18 can transport the processed workpiece when it rotates, which is convenient for collecting and storing the formed workpiece, greatly improving the practicality of the mold.

[0051] In another embodiment provided by the present invention, a plurality of groups of blocking members are further arranged between the movable mold 2 and the mold frame 1. By arranging the blocking members, it can be ensured that each time the movable mold 2 slides to a predetermined position and stops, so that the size of the workpiece injected each time can be ensured to be consistent, further meeting the work needs. The blocking member includes 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. Therefore, when the movable mold 2 and the fixed mold 3 are molded, the fixed frame 12 drives the pressure block 20 to slide at this moment, and the pressure block 20 is driven to slide out of the mold frame 1 through the cooperation between the pressure block 20 and the power groove until the movable mold 2 contacts the pad 21. Thereby, the work needs can be further met, so that the sliding position of the movable mold 2 is within the error, meeting the work needs. And the transmission between the pressure block 20 and the pad 21 is achieved when the movable mold 2 and the fixed mold 3 are molded, which is an unexpected technical effect. A connecting spring 22 is provided between the pad 21 and the mold frame 1 through the protrusion. The elastic force of the connecting spring 22 drives the pad 21 to retract inside the mold frame 1. Therefore, when the movable mold 2 and the fixed mold 3 are opened, the connecting spring 22 drives the pad 21 to return to its original position during the process of restoring its elastic deformation.

[0052] Specifically, the present invention also provides an injection molding machine, which includes the above-mentioned injection molding machine clamping device, and the above-mentioned injection molding machine clamping devices are all suitable for the injection molding machine, that is, the injection molding machine should also have the same effects as above, which will not be repeated one by one.

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

[0054] In the description of the present invention, it should be noted that, unless otherwise clearly specified and limited, the terms "installed", "provided with", "connected", etc. should be understood in a broad sense. For example, "connected" 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 a direct connection, or it can be indirectly connected through an intermediate medium, or it can be the internal communication of two components. For ordinary technicians in this field, the specific meanings of the above terms in the present invention can be understood according to specific circumstances.

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

Claims

1. 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: The two sides of the mold frame (1) are slidably connected to a sliding frame (7), and a material receiving plate (9) is slidably connected inside the sliding frame (7) via a trigger member (11), and 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 arranged 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 arranged 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 workpiece unloading.

2. The mold clamping device of an injection molding machine according to claim 1, characterized in that: 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).

3. The mold clamping device of an injection molding machine according to claim 2, characterized in that: The intermittent power mechanism (8) comprises a reciprocating screw rod (81) rotatably connected to the mold frame (1), and a threaded sleeve (82) threadably connected to the reciprocating screw rod (81) is installed on the sliding frame (7); It also includes a spur gear (84), which is mounted on the reciprocating screw rod (81) via an intermittent connection portion (83). A power rack (85) is fixedly connected to the fixed frame (12), and the power rack (85) is meshed with the spur gear (84).

4. The mold clamping device of an injection molding machine according to claim 3, characterized in that: The intermittent connection part (83) comprises a connection cylinder, and a spur gear (84) is fixedly connected to the connection cylinder; The reciprocating screw rod (81) is fixedly connected to a connecting rod (831), a ratchet (832) is installed on the connecting rod (831) through a base, a tooth groove (833) is provided on the connecting tube, and the ratchet (832) is clamped in the tooth groove (833).

5. The mold clamping device of an injection molding machine according to claim 3, 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 arranged between the ejection plate (14) and the movable mold (2).

6. The mold clamping device of an injection molding machine according to claim 5, characterized in that: The driving part (16) comprises a first driving rack (161) fixedly connected to the fixed 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), and 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).

7. The mold clamping device of an injection molding machine according to claim 3, characterized in that: A support frame (17) is also provided at the bottom of the mold frame (1), and a conveying component for conveying workpieces 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) is 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 falling on the conveyor belt (18).

8. The mold clamping device of an injection molding machine according to claim 7, characterized in that: The intermittent linkage mechanism (19) comprises a first connecting cylinder (191) fixedly connected to one of the conveying rollers, and the first connecting cylinder (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) is fixedly connected to a second connecting tube (193), the second connecting tube (193) is fixedly connected to a plurality of groups of wedge blocks (194), each wedge block (194) is 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 arranged 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 installation 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).

9. The mold clamping device of an injection molding machine according to claim 3, 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.

10. An injection molding machine, characterized in that: The invention comprises the mold clamping device of an injection molding machine as described in any one of claims 1 to 9.

Images