A secondary injection molding mold

Abstract

The present invention relates to the technical field of secondary injection molding, specifically a secondary injection molding mold, including a movable mold and a fixed mold, the movable mold including a first mold part and a second mold part, the fixed mold having a mold groove corresponding to the first mold part and the second mold part; the movable mold also includes a connecting frame, the second mold part is slidably embedded in the connecting frame, the connecting frame is fixedly connected with a fastening mechanism corresponding to the initial position of the first mold part, the fastening mechanism includes a connecting frame, and the connecting frame is fixedly connected to one side of the movable mold. The present invention cooperates with the fastening mechanism and the trigger mechanism. During the entire injection molding process, when the connecting frame approaches the fixed mold, the trigger mechanism is triggered, the fastening mechanism is energized, and under the action of the fastening mechanism, the connecting frame and the fixed mold are firmly fixed, which can prevent the occurrence of burrs due to insufficient clamping force and effectively improve the quality of injection molded parts.

Description

Technical Field

[0001] The invention relates to the technical field of secondary injection molding, in particular to a secondary injection molding mold. Background Art

[0002] Injection molding is a method of producing industrial products. Products are usually produced using rubber injection molding and plastic injection molding.

[0003] Secondary injection molding: It is a special plastic molding process, also known as encapsulation or encapsulation. It is similar to the two-color molding process, but it is quite different from the two-color molding process. It is a process in which a certain plastic raw material is molded in a primary plastic mold, the molded parts are taken out, and placed in a secondary molding mold to be injected with the same or another plastic material again.

[0004] The mold used in the secondary injection molding is divided into two parts. Injection will be performed on one part of the mold first, and then the mold will be rotated to inject the already injected part again. The other part of the mold will perform the injection molding of the previous part. At the end of the secondary injection, the mold will peel off the workpiece and then rotate back to perform the secondary injection molding of the mold part of the first injection, and then reciprocate to form a continuous process.

[0005] During the injection molding process, burrs will appear on the molded parts after injection. This phenomenon is caused by insufficient mold clamping force. Since the mold has to rotate, advance and retract, this situation is more likely to occur, resulting in poor quality of the injection molded parts.

[0006] Therefore, a secondary injection molding mold is proposed. Summary of the invention

[0007] The purpose of the present invention is to provide a secondary injection molding mold, which solves the problem that during the injection molding process, insufficient mold clamping force causes burrs on the molded parts after injection molding, resulting in poor quality of the injection molded parts.

[0008] To achieve the above object, the present invention provides the following technical solutions:

[0009] A secondary injection molding mold includes a movable mold and a fixed mold, the movable mold includes a first mold part and a second mold part, the fixed mold has mold grooves corresponding to the first mold part and the second mold part; the movable mold also includes a connecting frame, the second mold part is slidably embedded in the connecting frame, and the connecting frame is fixedly connected with a fastening mechanism corresponding to the initial position of the first mold part.

[0010] During use, firstly, the first mold part and the fixed mold are injected, then the mold is rotated and moved, the first mold part and the fixed mold are injected twice, the second mold part is injected for the first time, and then the first mold part and the second mold part leave the fixed mold, and the second injection molded workpiece on the first mold part is demolded. During the whole working process, the first mold part and the second mold part will approach the fixed mold together with the connecting frame. When leaving the fixed mold, the connecting frame will retreat more than the first mold part and the second mold part, and the first mold part and the second mold part will rotate in front of the connecting frame. During the whole injection molding process, when the connecting frame approaches the fixed mold, it will be firmly fixed between the connecting frame and the fixed mold under the action of the fastening mechanism, which can prevent the burr phenomenon caused by insufficient clamping force and effectively improve the quality of the injection molded parts.

[0011] Preferably, the fastening mechanism includes a connecting frame, which is fixedly connected to one side of the movable mold, one end of the connecting frame is fixedly connected to the connecting frame, and the other side of the movable mold is fixedly connected to a movable iron block, and sleeves are fixedly connected to the positions of the connecting frame and the movable iron block on both sides of the fixed mold, a movable block is slidably inserted in the sleeve, an electromagnet is fixedly connected to the movable block, an insertion rod is fixedly connected to the bottom of the movable block, a fixed plate is horizontally fixedly connected in the sleeve, the insertion rod is slidably inserted in the sleeve and the fixed plate, a first spring is fixedly connected between the movable block and the fixed plate, a triggering mechanism is fixedly connected in the sleeve, and the first spring and the electromagnet are electrically connected to the triggering mechanism.

[0012] When the movable mold approaches the fixed mold, the fastening iron blocks and the movable iron blocks on both sides of the movable mold will move toward the electromagnet on the fixed mold and squeeze the electromagnet to contract the first spring. When the first spring contracts to a certain extent, the trigger mechanism is triggered, and current will pass through the electromagnet and the first spring. The first spring generates a contraction force under the action of the current, and the electromagnet will generate suction to adsorb the fastening iron block and the movable iron block, so that the pressing between the connecting frame and the fixed mold is tighter, providing a stronger clamping force between the connecting frame and the fixed mold, and effectively preventing the occurrence of burrs.

[0013] Preferably, the trigger mechanism includes a moving column, which is fixedly connected to the insertion rod, and the bottom of the moving column is fixedly connected to an extrusion column, and a moving contact piece and a static contact piece are fixedly connected in the sleeve, the moving contact piece can contact the static contact piece, and the extrusion column can contact the moving contact piece.

[0014] When the insertion rod moves, the moving column moves with the insertion rod. During the movement, the moving column will cause the squeezing column to squeeze the moving contact piece, so that the static contact piece and the moving contact piece contact each other. At this time, the circuit of the first spring and the electromagnet is connected, so that the first spring can contract, and the electromagnet will generate adsorption force on the fastening iron block and the moving iron block, so that an automatic process can be generated, and there is no need for human control of the action of the fastening mechanism.

[0015] Preferably, a transmission mechanism is connected between the connecting frame and the fixed mold, two second racks are connected inside the transmission mechanism, a moving iron block is fixedly connected between the two second racks, a brush is fixedly connected to the side of the moving iron block facing the moving mold, and the brush can contact the first mold part.

[0016] When the connecting frame and the fixed mold are close to each other, the transmission mechanism moves, driving the two second racks to slide toward each other, so that the brush on the moving iron block cleans the first mold part or the second mold part. It should be noted that the position of the second rack on the connecting frame is unchanged, and the moving iron block there will always clean the first mold part and the second mold part after demolding. The reason is that Figure 1 As a direction reference, the position of the moving iron block is to the right. The first mold part or the second mold part at this position is always prepared for one injection when it is close to the fixed mold. Therefore, the first mold part or the second mold part at this position needs to be cleaned to prevent foreign matter on the first mold part or the second mold part from affecting the injection molding and causing burrs after injection molding.

[0017] Preferably, the transmission mechanism includes a gear, and the top and bottom of the connecting frame are fixedly connected with a transmission cylinder, a rotating shaft is rotatably inserted in the transmission cylinder, the gear is fixedly sleeved on the rotating shaft, a second rack is slidably inserted in the transmission cylinder, the second rack and the gear are meshed with each other, the top and bottom of the fixed mold are fixedly connected with a mounting plate, a first rack is fixedly connected on the mounting plate, and the first rack can be slidably inserted in the transmission cylinder and meshed with the gear.

[0018] When the connecting frame is close to the fixed mold, the first rack will be inserted into the transmission cylinder and mesh with the upper gear. The gear will rotate and drive the meshing second rack to Figure 1 As the direction reference, the two second racks are moved to the left, so that the moving iron block on the second rack cleans the first mold part or the second mold part. Before each mold closing, the first mold part or the second mold part close to the right side is cleaned to ensure that the first mold part at this position can be cleaned.

[0019] Preferably, a blowing mechanism is provided on the top of the movable mold, the blowing mechanism is interconnected with the second rack, and an air outlet of the blowing mechanism is provided near the brush.

[0020] In order to prevent the scraped foreign matter from remaining on the surface of the first mold part or the second mold part, when the second rack moves, the blowing mechanism will blow air toward the brush to blow away the scraped foreign matter on the brush, effectively preventing the scraped foreign matter from continuing to remain on the surface of the first mold part or the second mold part, further ensuring the cleaning effect of the foreign matter on the first mold part or the second mold part.

[0021] Preferably, the blowing mechanism includes an air cylinder, which is fixedly connected to the top of the movable mold, a movable piston plate is slidably connected to the air cylinder, the second rack is slidably inserted on one side of the air cylinder, a vent hole is provided in the movable piston plate, an air passage is provided in the second rack, the vent hole and the air passage are connected to each other, the air passage extends into the second rack, the air passage provided in the second rack is fixedly connected to a nozzle, the nozzle faces downward toward the brush, and a one-way valve is fixedly installed on the air cylinder.

[0022] by Figure 1 As a direction reference, when the second rack moves to the left, the second rack will push the movable piston plate to slide in the air cylinder. Under the action of the one-way valve, the gas in the air cylinder is compressed and the baffle is pushed open by air pressure, so that the air passes through the vent hole into the cavity of the air duct. The gas in the air duct is ejected from the nozzle and sprayed toward the brush. When the air pressure needs to be supplemented, the air cylinder will inhale air through the one-way valve.

[0023] Preferably, the brush is slidably connected to the second rack, a vibration mechanism is fixedly connected to the second rack, and the vibration mechanism and the brush are connected to each other.

[0024] When the brush scrapes the first mold part or the second mold part, the vibration mechanism is activated and the brush vibrates, which can enhance the cleaning effect of the brush on foreign matter on the first mold part or the second mold part.

[0025] Preferably, the vibration mechanism includes a second spring, a vibration groove is opened on the second rack, the brush is fixedly connected to the sliding block, the sliding block is slidably connected in the vibration groove, a second spring is fixedly connected between the side wall of the vibration groove and the sliding block, a magnet is fixedly connected to one side of the sliding block, an electromagnet is fixedly connected to the side wall of the vibration groove, and the electromagnet is externally connected to alternating current.

[0026] When connected to an external alternating current, the electromagnet continuously generates magnetism of opposite polarity at a certain frequency, which attracts or repels the magnet, causing the sliding block to continuously move in the vibration groove. This principle is similar to that of an electric bell, causing the brush installed on the sliding block to continuously vibrate, which can produce a better cleaning effect.

[0027] Preferably, the thickness of the gear is the sum of the thicknesses of the first rack and the second rack, and the heights at which the first rack and the second rack mesh with the gear are staggered.

[0028] In order to prevent the meshing of the first rack and the gear from hindering the meshing of the gear and the second rack, the positions of the first rack and the second rack are staggered, so that the transmission can be effective without causing any obstruction.

[0029] Compared with the prior art, the present invention has the following beneficial effects:

[0030] 1. The present invention cooperates with a fastening mechanism and a trigger mechanism. During the entire injection molding process, when the connecting frame is close to the fixed mold, the trigger mechanism will be triggered and the fastening mechanism will be energized. Under the action of the fastening mechanism, the connecting frame and the fixed mold will be firmly fixed, which can prevent the occurrence of burrs caused by insufficient clamping force and effectively improve the quality of injection molded parts.

[0031] 2. The present invention uses the cooperation of the transmission mechanism and the vibration mechanism, so that during the injection molding process, each time the second injection molding of the first mold part or the second mold part is completed and demolded, before preparing for the first injection molding work, the first mold part or the second mold part at that position is vibrated and cleaned with a brush under the action of the transmission mechanism, so that foreign matter in the first mold part or the second mold part at that position is scraped off, thereby preventing the occurrence of burrs caused by foreign matter. BRIEF DESCRIPTION OF THE DRAWINGS

[0032] Figure 1 It is a front view of the movable mold of the present invention;

[0033] Figure 2 A top view of the present invention;

[0034] Figure 3 It is a left view of the movable mold of the present invention;

[0035] Figure 4 It is a schematic diagram of the transmission mechanism of the present invention;

[0036] Figure 5 For the present invention Figure 2 Enlarged view of point A in the middle;

[0037] Figure 6 For the present invention Figure 1 Enlarged view of point B in the middle;

[0038] Figure 7 For the present invention Figure 2 Enlarged view of center C.

[0039] In the figure: 1, moving mold; 101, first mold part; 102, second mold part; 103, connecting frame; 2, fixed mold; 3, fastening mechanism; 301, connecting frame; 302, fastening iron block; 303, moving iron block; 304, sleeve; 305, moving block; 306, electromagnet; 307, fixed plate; 308, plug rod; 309, first spring; 4, trigger mechanism; 401, moving column; 402, extrusion column; 403, moving contact piece; 404, static contact piece; 5, mounting plate; 6, first Rack; 7. Transmission cylinder; 8. Rotating shaft; 9. Gear; 10. Second rack; 11. Brush; 12. Vibration mechanism; 1201. Vibration groove; 1202. Second spring; 1203. Sliding block; 1204. Magnet; 1205. Electromagnet; 13. Blowing mechanism; 1301. Air cylinder; 1302. Moving piston plate; 1303. Vent hole; 1304. Vent duct; 1305. Baffle; 1306. Fixed frame; 1307. Sliding rod; 1308. Third spring; 1309. Nozzle. DETAILED DESCRIPTION

[0040] 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.

[0041] In the description of the present invention, it should be understood that the terms "center", "longitudinal", "lateral", "length", "width", "thickness", "up", "down", "front", "back", "left", "right", "vertical", "horizontal", "top", "bottom", "inside", "outside", "clockwise", "counterclockwise" and the like indicating directions or positional relationships are based on the directions or positional relationships shown in the accompanying drawings, and are only for the convenience of describing the present invention and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific direction, be constructed and operated in a specific direction, and therefore should not be understood as limiting the present invention.

[0042] In addition, the terms "first" and "second" are only used for descriptive purposes and cannot be understood as indicating or implying relative importance or implicitly indicating the number of technical features indicated. Therefore, the features defined as "first" and "second" may explicitly or implicitly include one or more of the features. In the description of the present invention, "multiple" means two or more, unless otherwise clearly and specifically defined. In addition, the terms "installed", "connected" and "connected" should be understood in a broad sense, for example, it 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 connection of 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 circumstances.

[0043] See also Figures 1 to 7 The present invention provides a secondary injection molding mold, and the technical solution is as follows:

[0044] A secondary injection molding mold includes a movable mold 1 and a fixed mold 2, the movable mold 1 includes a first mold part 101 and a second mold part 102, the fixed mold 2 has mold grooves corresponding to the first mold part 101 and the second mold part 102, the movable mold 1 also includes a connecting frame 103, the second mold part 102 is slidably embedded in the connecting frame 103, and the connecting frame 103 is fixedly connected with a fastening mechanism 3 corresponding to the initial position of the first mold part 101.

[0045] During use, firstly, the first mold part 101 and the fixed mold 2 are injected, then the mold 1 is rotated and moved, the first mold part 101 and the fixed mold 2 are injected twice, the second mold part 102 is injected for the first time, and then the first mold part 101 and the second mold part 102 leave the fixed mold 2, and the second injection molded workpiece on the first mold part 101 is demolded. During the whole working process, the first mold part 101 and the second mold part 102 will approach the fixed mold 2 together with the connecting frame 103. When leaving the fixed mold 2, the connecting frame 103 will retreat more than the first mold part 101 and the second mold part 102, and the first mold part 101 and the second mold part 102 will rotate in front of the connecting frame 103. During the whole injection molding process, when the connecting frame 103 approaches the fixed mold 2, the fastening mechanism 3 will firmly fix the connecting frame 103 and the fixed mold 2, which can prevent the burr phenomenon caused by insufficient clamping force and effectively improve the quality of the injection molded parts.

[0046] As an embodiment of the present invention, refer to Figure 1The fastening mechanism 3 includes a connecting frame 301, which is fixedly connected to one side of the movable mold 1, and a movable iron block 303 is slidably connected to the other side of the movable mold 1. The positions of the connecting frame 301 and the movable iron block 303 on both sides of the fixed mold 2 are fixedly connected with sleeves 304, a movable block 305 is slidably inserted in the sleeve 304, an electromagnet 306 is fixedly connected to the movable block 305, and an insertion rod 308 is fixedly connected to the bottom of the movable block 305. A fixed plate 307 is horizontally fixedly connected in the sleeve 304, and the insertion rod 308 is slidably inserted in the sleeve 304 and the fixed plate 307. A first spring 309 is fixedly connected between the movable block 305 and the fixed plate 307, and a trigger mechanism 4 is fixedly connected in the sleeve 304. The first spring 309 and the electromagnet 306 are electrically connected to the trigger mechanism 4.

[0047] When the movable mold 1 approaches the fixed mold 2, the fastening iron block 302 and the movable iron block 303 on both sides of the movable mold 1 will move toward the electromagnet 306 on the fixed mold 2 and squeeze the electromagnet 306 to shrink the first spring 309. When the first spring 309 shrinks to a certain extent, the trigger mechanism 4 is triggered, and current will pass through the electromagnet 306 and the first spring 309. The first spring 309 generates a contraction force under the action of the current, and the electromagnet 306 generates suction force to adsorb the fastening iron block 302 and the movable iron block 303, so that the pressing between the connecting frame 103 and the fixed mold 2 is tighter, providing a stronger clamping force between the connecting frame 103 and the fixed mold 2, and effectively preventing the occurrence of burrs.

[0048] It should be noted that when the clamping force is less than the injection pressure, the present technical solution is only to compensate for the difference between the clamping force and the injection pressure. The first spring 309 contracts when the current is turned on, which is essentially contracted by magnetic force. The magnetic force generated by the power supply is affected by factors such as the current, voltage, and number of spring turns. Therefore, the more turns and the greater the current, the greater the pulling force generated.

[0049] As an embodiment of the present invention, refer to Figure 1 The trigger mechanism 4 includes a moving column 401, which is fixedly connected to the insertion rod 308. The bottom of the moving column 401 is fixedly connected to an extrusion column 402. A moving contact piece 403 and a static contact piece 404 are fixedly connected in the sleeve 304. The moving contact piece 403 can contact the static contact piece 404, and the extrusion column 402 can contact the moving contact piece 403.

[0050] When the insertion rod 308 moves, the moving column 401 moves with the insertion rod 308. During the movement, the moving column 401 will cause the squeezing column 402 to squeeze the moving contact piece 403, so that the static contact piece 404 and the moving contact piece 403 contact each other. At this time, the circuit of the first spring 309 and the electromagnet 306 is connected, so that the first spring 309 can contract, and the electromagnet 306 will generate an adsorption force on the fastening iron block 302 and the moving iron block 303. In this way, an automatic process can be generated, and there is no need for human control of the action of the fastening mechanism 3.

[0051] As an embodiment of the present invention, refer to Figure 1 A transmission mechanism is connected between the connecting frame 103 and the fixed mold 2, and two second racks 10 are connected in the transmission mechanism. A moving iron block 303 is fixedly connected between the two second racks 10, and a brush 11 is slidably connected to one side of the moving iron block 303 toward the moving mold 1, and the brush 11 can contact the first mold part 101.

[0052] When the connecting frame 103 and the fixed mold 2 are close to each other, the transmission mechanism moves, driving the two second racks 10, so that the moving iron block 303 between the two second racks 10 slides to one side, so that the brush 11 on the moving iron block 303 cleans the first mold part 101 or the second mold part 102. It should be noted that the position of the second rack 10 on the connecting frame 103 is unchanged, and the moving iron block 303 there will always clean the first mold part 101 and the second mold part 102 after demolding. The reason is that Figure 1 As a direction reference, the position of the movable iron block 303 is to the right. The first mold part 101 or the second mold part 102 at this position is always prepared for one-time injection molding when it is close to the fixed mold 2. Therefore, the first mold part 101 or the second mold part 102 at this position needs to be cleaned to prevent foreign matter on the first mold part 101 or the second mold part 102 from affecting the injection molding and causing burrs after injection molding.

[0053] As an embodiment of the present invention, refer to Figure 1 The transmission mechanism includes a gear 9. The top and bottom of the connecting frame 103 are fixedly connected with a transmission cylinder 7. A rotating shaft 8 is rotatably inserted in the transmission cylinder 7. The gear 9 is fixedly sleeved on the rotating shaft 8 and is located in the transmission cylinder 7. A second rack 10 is slidably inserted in the transmission cylinder 7. The second rack 10 and the gear 9 are meshed with each other. The top and bottom of the fixed mold 2 are fixedly connected with a mounting plate 5. A first rack 6 is fixedly connected to the mounting plate 5. The first rack 6 can be slidably inserted in the transmission cylinder 7 and meshed with the gear 9.

[0054] When the connecting frame 103 is close to the fixed mold 2, the first rack 6 will be inserted into the transmission cylinder 7 and mesh with the upper gear 9. The gear 9 will rotate and drive the meshed second rack 10 to Figure 1 As a direction reference, the two second racks 10 are moved to the left, so that the moving iron block 303 on the second rack 10 cleans the first mold part 101 or the second mold part 102. Before each mold closing, the first mold part 101 or the second mold part 102 close to the right side is cleaned to ensure that the first mold part 101 at this position can be cleaned.

[0055] As an embodiment of the present invention, refer to Figure 1 A blowing mechanism 13 is disposed on the top of the movable mold 1 . The blowing mechanism 13 is connected to the second rack 10 , and an air outlet of the blowing mechanism 13 is disposed near the brush 11 .

[0056] In order to prevent the scraped foreign matter from remaining on the surface of the first mold part 101 or the second mold part 102, when the second rack 10 moves, the blowing mechanism 13 will blow air toward the brush 11 to blow away the scraped foreign matter on the brush 11, effectively preventing the scraped foreign matter from continuing to remain on the surface of the first mold part 101 or the second mold part 102, further ensuring the cleaning effect of foreign matter on the first mold part 101 or the second mold part 102.

[0057] As an embodiment of the present invention, refer to Figure 1 The blowing mechanism 13 includes an air cylinder 1301, which is fixedly connected to the top of the movable mold 1, and a movable piston plate 1302 is slidably connected inside the air cylinder 1301. The second rack 10 is slidably inserted on one side of the air cylinder 1301. A vent hole 1303 is provided in the movable piston plate 1302, and an air passage 1304 is provided in the second rack 10. The vent hole 1303 and the air passage 1304 are interconnected, and the air passage 1304 extends into the second rack 10. The air passage 1304 provided in the second rack 10 is fixedly connected to a nozzle 1309, and the nozzle 1309 faces downward toward the brush 11. A one-way valve is fixedly installed on the air cylinder 1301.

[0058] by Figure 1 As a direction reference, when the second rack 10 moves to the left, the second rack 10 will push the movable piston plate 1302 to slide in the air cylinder 1301. Under the action of the one-way valve, the gas in the air cylinder 1301 is compressed and the baffle 1305 is pushed open by the air pressure, so that the air passes through the vent hole 1303 to the cavity of the air duct 1304. The gas in the air duct 1304 is ejected from the nozzle 1309 and sprayed toward the brush 11. When the air pressure needs to be supplemented, the air cylinder 1301 will inhale air through the one-way valve.

[0059] As an embodiment of the present invention, refer to Figure 1 The movable iron block 303 is fixedly connected with a vibration mechanism 12 , and the vibration mechanism 12 and the brush 11 are connected to each other.

[0060] When the brush 11 scrapes the first mold part 101 or the second mold part 102 , the vibration mechanism 12 is activated and the brush 11 vibrates, which can enhance the cleaning effect of the brush 11 on foreign matter on the first mold part 101 or the second mold part 102 .

[0061] As an embodiment of the present invention, refer to Figure 1 The vibration mechanism 12 includes a second spring 1202, a vibration groove 1201 is opened on the moving iron block 303, the brush 11 is fixedly connected to the sliding block 1203, the sliding block 1203 is slidably connected in the vibration groove 1201, the second spring 1202 is fixedly connected between the side wall of the vibration groove 1201 and the sliding block 1203, a magnet 1204 is fixedly connected to one side of the sliding block 1203, and an electromagnet 1205 is fixedly connected to the side wall of the vibration groove 1201, and the electromagnet 1205 is externally connected to alternating current.

[0062] When an external alternating current is connected, the electromagnet 1205 continuously generates magnetism of opposite polarity at a certain frequency, adsorbs or repels the magnet 1204, and causes the sliding block 1203 to continuously move in the vibration groove 1201. This principle is similar to that of an electric bell, causing the brush 11 installed on the sliding block 1203 to continuously vibrate, which can produce a better cleaning effect.

[0063] As an embodiment of the present invention, refer to Figure 1 The thickness of the gear 9 is the sum of the thicknesses of the first rack 6 and the second rack 10 , and the heights at which the first rack 6 and the second rack 10 mesh with the gear 9 are staggered.

[0064] In order to prevent the meshing of the first rack 6 and the gear 9 from hindering the meshing of the gear 9 and the second rack 10, the positions of the first rack 6 and the second rack 10 are staggered, so that the transmission can be effective without causing any obstruction.

[0065] Working principle: During use, firstly, the first mold part 101 and the fixed mold 2 are injected, then the mold 1 is rotated and moved, the first mold part 101 and the fixed mold 2 are injected twice, the second mold part 102 is injected for the first time, and then the first mold part 101 and the second mold part 102 leave the fixed mold 2, and the secondary injection molded workpiece on the first mold part 101 is demolded. During the entire working process, the first mold part 101 and the second mold part 102 will approach the fixed mold 2 together with the connecting frame 103. When leaving the fixed mold 2, the connecting frame 103 will retreat more than the first mold part 101 and the second mold part 102, and the first mold part 101 and the second mold part 102 will rotate in front of the connecting frame 103. During the entire injection molding process, when the connecting frame 103 approaches the fixed mold 2, it will be firmly fixed between the connecting frame 103 and the fixed mold 2 under the action of the fastening mechanism 3, which can prevent the burr phenomenon caused by insufficient clamping force and effectively improve the quality of the injection molded parts.

[0066] The electrical components appearing in this article are all connected to the external main controller and 220V AC power through a transformer, and the main controller can be a conventional known device that controls a computer, etc. The product model provided by the present invention is only used for the technical solution according to the structural characteristics of the product. The product will be adjusted and modified after purchase to make it more matching and consistent with the technical solution of the present invention. It is a technical solution for the best application of the technical solution. The model of its product can be replaced and modified according to the required technical parameters, which is well known to technical personnel in this field. Therefore, technical personnel in this field can clearly obtain the corresponding use effect through the technical solution provided by the present invention.

[0067] 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 secondary injection molding mold, comprising A movable mold (1), the movable mold (1) comprising a first mold part (101) and a second mold part (102); A fixed mold (2), wherein the fixed mold (2) has mold grooves corresponding to the first mold part (101) and the second mold part (102); Features: The movable mold (1) further comprises a connecting frame (103), and the second mold part (102) is slidably embedded in the connecting frame (103); The connection frame (103) is fixedly connected with a fastening mechanism (3) corresponding to the initial position of the first mold part (101); The fastening mechanism (3) comprises a connecting frame (301), the connecting frame (301) is fixedly connected to one side of the movable mold (1), the other side of the movable mold (1) is slidably connected to a movable iron block (303), both sides of the fixed mold (2) corresponding to the positions of the connecting frame (301) and the movable iron block (303) are fixedly connected to sleeves (304), a movable block (305) is slidably inserted in the sleeve (304), and the movable block (305) is fixedly connected to an electromagnet, The bottom of the moving block (305) is fixedly connected with an insertion rod (308), a fixed plate (307) is horizontally fixedly connected inside the sleeve (304), the insertion rod (308) is slidably inserted in the sleeve (304) and the fixed plate (307), a first spring (309) is fixedly connected between the moving block (305) and the fixed plate (307), a trigger mechanism (4) is fixedly connected inside the sleeve (304), and the first spring (309) and the electromagnet are electrically connected to the trigger mechanism (4); The trigger mechanism (4) comprises a moving column (401), the moving column (401) is fixedly connected to the insertion rod (308), the bottom of the moving column (401) is fixedly connected to a squeezing column (402), a moving contact piece (403) and a stationary contact piece (404) are fixedly connected inside the sleeve (304), the moving contact piece (403) can contact the stationary contact piece (404), and the squeezing column (402) can contact the moving contact piece (403); A transmission mechanism is connected between the connection frame (103) and the fixed mold (2), two second racks (10) are connected inside the transmission mechanism, a moving iron block (303) is fixedly connected between the two second racks (10), a brush (11) is slidably connected to a side of the moving iron block (303) facing the moving mold (1), and the brush (11) can contact the first mold part (101); The transmission mechanism comprises a gear (9), the top and bottom of the connection frame (103) are fixedly connected to a transmission cylinder (7), a rotating shaft (8) is rotatably inserted in the transmission cylinder (7), the gear (9) is fixedly sleeved on the rotating shaft (8), a second rack (10) is slidably inserted in the transmission cylinder (7), the second rack (10) and the gear (9) are meshed with each other, the top and bottom of the fixed mold (2) are fixedly connected to a mounting plate (5), the mounting plate (5) is fixedly connected to a first rack (6), the first rack (6) is slidably inserted in the transmission cylinder (7) and meshes with the gear (9); A blowing mechanism (13) is arranged on the top of the movable mold (1), the blowing mechanism (13) is connected to the second rack (10), and an air outlet of the blowing mechanism (13) is arranged near the brush (11); The blowing mechanism (13) comprises an air cylinder (1301), wherein the air cylinder (1301) is fixedly connected to the top of the movable mold (1), a movable piston plate (1302) is slidably connected inside the air cylinder (1301), the second rack (10) is slidably inserted on one side of the air cylinder (1301), an air vent (1303) is provided inside the movable piston plate (1302), an air passage (1304) is provided inside the second rack (10), the air vent (1303) and the air passage (1304) are interconnected, the air passage (1304) extends into the second rack (10), the air passage (1304) provided in the second rack (10) is fixedly connected to a nozzle (1309), the nozzle (1309) is downwardly directed toward the brush (11), and a one-way valve is fixedly installed on the air cylinder (1301); The movable iron block (303) is fixedly connected with a vibration mechanism (12), and the vibration mechanism (12) and the brush (11) are connected to each other; The vibration mechanism (12) comprises a second spring (1202), a vibration groove (1201) is provided on the movable iron block (303), the brush (11) is fixedly connected to the sliding block (1203), the sliding block (1203) is slidably connected in the vibration groove (1201), a second spring (1202) is fixedly connected between the side wall of the vibration groove (1201) and the sliding block (1203), a magnet (1204) is fixedly connected to one side of the sliding block (1203), an electromagnet is fixedly connected to the side wall of the vibration groove (1201), and the electromagnet is externally connected to an alternating current; The thickness of the gear (9) is the sum of the thicknesses of the first rack (6) and the second rack (10), and the meshing heights of the first rack (6) and the second rack (10) with the gear (9) are staggered.

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