A mold opening device for injection mold with position adjusting function

Abstract

The present application relates to the technical field of injection molding processing, and particularly relates to an injection mold opening device with a position adjusting function, which comprises a box, a controller, a supporting plate and a first strip-shaped opening, the controller is installed on the box, the box is internally provided with the supporting plate, the top end of the box is provided with two groups of the first strip-shaped openings, and the device further comprises a centering and clamping assembly, a top fixing assembly and a limiting assembly, the box is internally provided with the centering and clamping assembly, the top end of the box is provided with the top fixing assembly, the limiting assembly is installed on the top fixing assembly, the centering and clamping assembly cooperates with the limiting assembly to limit the top fixing assembly, and the centering and clamping assembly and the top fixing assembly are electrically connected with the controller; when the device is used, the injection mold is placed on the box, then the controller is started to clamp the two sides of the injection mold through the centering and clamping assembly, the centering and clamping of the injection mold is realized, and when the centering and clamping assembly fixes the two sides of the injection mold, the sequence of clamping the two sides first and then fixing the top of the injection mold is realized.

Description

Technical Field

[0001] This invention relates to the technical field of injection molding, and in particular to an injection mold opening device with a position adjustment function. Background Technology

[0002] During injection mold processing, a mold opening device is required to fix and open the injection mold to ensure the normal progress of injection molding. The mold opening device typically includes a mold clamping and fixing mechanism and a mold opening drive mechanism. The reliability of the clamping and fixing mechanism and the correctness of the operating sequence directly affect processing safety and product quality.

[0003] Currently, patent document CN221985757U discloses a mold opening device for injection molds, including a base, an installation frame fixedly connected to the rear side of the top of the base, a cylinder fixedly connected to the top of the installation frame, a control box fixedly connected to the bottom of the cylinder output end through the installation frame, a first motor fixedly connected to the bottom of the inner cavity of the control box, screws fixedly connected to both sides of the output end of the first motor, a threaded sleeve sleeved on the surface of the screw, a clamping block fixedly connected to the bottom of the threaded sleeve, and the bottom of the clamping block extending to the outside of the control box.

[0004] However, the aforementioned prior art still has the following shortcomings: the control box (driven by a cylinder to press down), the clamping block (driven by a first motor to clamp), and the fixing rod (driven by a second motor to press up) of the device are controlled by independent drive sources, and the timing between each action depends entirely on the operator's operating sequence or the electrical control program for coordination; in actual production, operators are very prone to misoperation, for example, operating the cylinder to drive the control box to move downward before the mold is placed in place or before the clamping components on both sides (clamping block and fixing rod) are aligned and clamped; since the mold's horizontal position is not yet fixed at this time, the control box cannot accurately align with the center position of the mold when it is pressed down, causing the mold to tilt or shift when it is clamped, which not only affects the normal progress of subsequent mold opening processes, but may also cause mold damage or even equipment accidents. Summary of the Invention

[0005] To solve the above-mentioned technical problems, the present invention provides an injection mold opening device with position adjustment function.

[0006] The present invention provides an injection mold opening device with position adjustment function, comprising a housing, a controller, a support plate, and a first strip opening. The controller is mounted on the housing, the support plate is provided inside the housing, and two sets of first strip openings are provided at the top of the housing. It also includes a centering clamping component, a top fixing component, and a limiting component. The centering clamping component is provided inside the housing, the top fixing component is provided at the top of the housing, and the limiting component is mounted on the top fixing component. The centering clamping component and the limiting component cooperate to limit the top fixing component. Both the centering clamping component and the top fixing component are electrically connected to the controller.

[0007] Preferably, the centering clamping assembly includes a fixed seat, a guide rod, a base, a rotating shaft, a first gear, a first cylinder, a moving rod, a moving plate, a guide plate, and a clamping plate assembly. Two pairs of fixed seats are provided at the top of the support plate, each pair of fixed seats having a set of guide rods fixedly mounted on it. The two sets of bases are slidably connected to the two sets of guide rods. A rotating shaft is rotatably mounted at the top of the support plate, with a first gear at its top. A set of moving plates is provided at the top of each set of bases, with a set of guide plates at the outer end of each set of moving plates. A set of moving rods is fixedly mounted on each set of guide plates, with a first rack at the inner end of each set of moving rods. Both sets of first racks mesh with the first gear. The moving rods are slidably connected to the other set of guide plates. A first cylinder is provided at the bottom of the support plate, a vertical plate is provided at the bottom of one set of bases, and the support plate has a second strip-shaped opening. The vertical plate extends to the bottom of the support plate through the second strip opening. The moving end of the first cylinder is connected to the vertical plate. Each set of moving plates is equipped with a clamping plate assembly, the height of which is adjustable. The top of each set of moving plates passes through a set of first strip openings. In use, the operator places the injection mold on the box and starts the first cylinder to shorten through the controller. This causes the first cylinder to pull a set of bases through the vertical plate. Since the two sets of first racks and first gears mesh, the first gears rotate adaptively. The two sets of first gears move closer together in mirror image with the help of the light rod. This further causes the two sets of moving plates to drive the corresponding clamping plate assemblies to move closer together in mirror image. This allows the two sets of clamping plate assemblies to clamp and fix the two sides of the injection mold. At the same time, the two sets of moving plates release the restriction of the limiting assembly on the top fixing assembly, improving the ease of operation.

[0008] Preferably, the clamping plate assembly includes a U-shaped base, clamping plates, a horizontal plate, a first spring, a first telescopic rod, a pressure plate, and an inclined end. Each set of movable plates is provided with three strip-shaped openings. The U-shaped base is fitted onto the outside of the movable plate, and bolts and nuts pass through the three strip-shaped openings to fix the U-shaped base. The clamping plate is installed on the U-shaped base. A horizontal plate is provided at the top of the clamping plate, and a groove is provided at the bottom of the horizontal plate. The pressure plate is slidably placed in the groove. A first spring and a first telescopic rod are respectively provided at the top of the pressure plate, and an inclined end is provided at the bottom of the pressure plate away from the clamping plate. According to the height of the injection mold, the operator adjusts the height position of the U-shaped base on the movable plate. The adjustment principle is that the bottom of the horizontal plate is flush with the top of the injection mold. After the adjustment is completed, when the two sets of clamping plates are mirror images close together, the clamping plates cooperate to press the top of both sides of the injection mold. At the same time, the two sets of inclined ends abut against the sides of the injection mold, so that the two sets of pressure plates enter the grooves respectively. The bottom of the pressure plate, under the elastic force of the first spring, presses the top of the injection mold, thereby fixing the sides and top corners of the injection mold.

[0009] Preferably, the top-fixing assembly includes a second cylinder, a lifting frame, a top plate, a pressure block, and upright plates. Two sets of upright plates are provided at the top of the housing, and the top of each set of upright plates is fixedly connected to the bottom of the top plate. A second cylinder is provided at the top of the top plate, and a lifting frame is provided at the bottom moving end of the second cylinder. The lifting frame is slidably fitted on the outside of the two sets of upright plates, and a pressure block is provided at the bottom of the lifting frame. The second cylinder is electrically connected to the controller, and a chamber is provided inside the upright plate. The operator operates the second cylinder to extend through the controller, thereby causing the lifting frame to drive the pressure block to move downward. The pressure block presses and fixes the top of the injection mold, improving the stability of the injection mold.

[0010] Preferably, the limiting assembly includes a crankshaft, bushing, limiting plate, connecting rod, second gear, second shaft, second rack, sprocket, chain, second spring, guide rod, and slider. A limiting plate is slidably mounted on the outer end of each chamber. A crankshaft and a second shaft are rotatably mounted in each chamber. A bushing is rotatably mounted on each crankshaft, and a connecting rod is mounted on the outer end of the bushing. One end of the connecting rod is hinged to one end of the limiting plate. A second gear is mounted on the second shaft. Sprockets are mounted on both the crankshaft and the second shaft, and the two sets of sprockets are driven by a chain. Two sets of guide rods are horizontally fixed in the chamber. Sliders are mounted on both sides of the second rack, and the sliders are slidably connected to the guide rods. A second spring is mounted on the guide rod, causing the two sets of second racks to move in a mirror-like approaching motion. The second rack meshes with the second gear. In the normal state... The two sets of moving plates move away from each other, with their outer ends pressing against the inner ends of the two sets of No. 2 racks, causing them to enter the chambers. Since the No. 2 racks mesh with the No. 2 gear, the No. 2 gear drives the No. 2 rotating shaft, which in turn causes the two sets of sprockets to rotate via chain drive, further rotating the crankshaft. This, in turn, causes the bushings, with the help of the connecting rod, to move the limiting plates away from each other, so that the tops of the two limiting plates contact the bottom of the lifting frame. The two limiting plates restrict the descent of the top plate. When the two sets of moving plates move closer to each other and press against both sides of the injection mold, the moving plates release the pressing operation on the No. 2 racks. The No. 2 racks, under the elastic force of the No. 2 spring, cause the No. 2 gear to reverse, further allowing the two limiting plates to enter the chambers and releasing the restriction on the lifting frame. This achieves the operation sequence of first pressing against both sides of the injection mold and then fixing the top of the injection mold.

[0011] Preferably, it also includes a reinforcing plate, which is provided between the box body and the upright plate; the reinforcing plate increases the firmness of the connection between the box body and the upright plate and improves the connection strength.

[0012] Preferably, it also includes an anti-slip pad, with an anti-slip pad provided at the bottom of the pressure block; the pressure block is fixed to the top of the injection mold by the anti-slip pad, improving the fixation firmness.

[0013] Preferably, it also includes anti-slip protrusions, with anti-slip protrusions provided at the inner ends of the two sets of clamping plates respectively; the two sets of clamping plates, in cooperation with the anti-slip protrusions, tighten and fix the two sides of the injection mold, thereby improving the firmness.

[0014] Preferably, a vertical rod is provided at the top of the lifting frame, and the vertical rod is slidably connected to the top plate.

[0015] Preferably, the outer wall of the light bar is provided with a smooth and wear-resistant coating.

[0016] Compared with the prior art, the beneficial effects of the present invention are as follows: In use, the injection mold is placed on the box, and then the centering clamping component is activated by the controller to clamp the two sides of the injection mold, thereby centering and fixing the injection mold. At the same time, when the centering clamping component fixes the two sides of the injection mold, the limiting component releases the restriction on the top fixing component. Then, the operator operates the top fixing component to fix the top of the injection mold through the controller. After the operation is completed, the top fixing component releases the top fixing of the injection mold. After the centering clamping component releases the fixation of the two sides of the injection mold and resets, the limiting component limits the top fixing component again, thereby realizing the sequence of centering and clamping the two sides of the injection mold first and then fixing the top. Attached Figure Description

[0017] Figure 1 This is a schematic diagram of the isometric structure of the present invention;

[0018] Figure 2 This is an exploded structural diagram of the present invention;

[0019] Figure 3 This is an enlarged structural diagram of the support plate and light bar, etc.

[0020] Figure 4 This is an enlarged structural diagram of the No. 1 cylinder and the moving plate, etc.

[0021] Figure 5 This is an enlarged structural diagram of the No. 2 cylinder and anti-slip pad, etc.

[0022] Figure 6 It is a cross-sectional structural diagram of a panel or similar structure.

[0023] Figure 7 yes Figure 6 A partially enlarged structural diagram of section A in the middle;

[0024] Figure 8 It is a cross-sectional structural diagram of a horizontal plate or similar structure;

[0025] Figure 9 This is an enlarged structural diagram of the No. 2 gear and crankshaft, etc.

[0026] Figure 10 This is an enlarged structural diagram of the No. 1 gear and guide plate, etc.

[0027] In the attached diagram, the following markings are used: 101, housing; 102, controller; 103, support plate; 104, first strip opening; 201, fixed base; 202, light bar; 203, base; 204, rotating shaft; 205, first gear; 206, first cylinder; 207, moving rod; 208, moving plate; 209, guide plate; 301, U-shaped seat; 302, clamping plate; 303, horizontal plate; 304, first spring; 305, first telescopic rod; 306, pressure plate; 307... 308. Sloping end; 401. Anti-slip protrusion; 402. Cylinder No. 2; 403. Lifting frame; 404. Top plate; 405. Pressure block; 406. Vertical plate; 407. Reinforcing plate; 408. Anti-slip pad; 501. Crankshaft; 502. Bushing; 503. Limiting plate; 504. Connecting rod; 505. Gear No. 2; 506. Rotating shaft No. 2; 507. Rack No. 2; 508. Sprocket; 509. Chain; 510. Spring No. 2; 511. Guide rod; 512. Slider. Detailed Implementation

[0028] To facilitate understanding of the present invention, a more complete description will be given below with reference to the accompanying drawings. The present invention can be implemented in many different forms and is not limited to the embodiments described herein. Rather, these embodiments are provided so that this disclosure will be thorough and complete.

[0029] like Figures 1 to 10 As shown, an injection mold opening device with position adjustment function according to the present invention includes a housing 101, a controller 102, a support plate 103, and a first strip opening 104. The controller 102 is mounted on the housing 101. The support plate 103 is disposed inside the housing 101. Two sets of first strip openings 104 are disposed at the top of the housing 101. The device also includes a centering clamping component, a top-fixing component, and a limiting component. The centering clamping component is disposed inside the housing 101, the top-fixing component is disposed at the top of the housing 101, and the limiting component is mounted on the top-fixing component for centering. The clamping component and the limiting component work together to limit the top fixing component. Both the centering clamping component and the top fixing component are electrically connected to the controller 102. It should be noted that the controller 102 is a common programmable logic controller or industrial microcontroller in the prior art. It integrates control circuits and signal processing modules to issue electrical control commands to cylinder 206 and cylinder 401. The controller 102 is installed by bolt fixing. The controller's control logic, circuit wiring and signal transmission method are all existing technologies in the field and will not be described in detail here.

[0030] Furthermore, the centering clamping assembly includes a fixed base 201, a light bar 202, a base 203, a rotating shaft 204, a first gear 205, a first cylinder 206, a moving rod 207, a moving plate 208, a guide plate 209, and a clamping plate assembly. Two pairs of fixed bases 201 are provided at the top of the support plate 103, and a set of light bars 202 are fixedly mounted on each pair of fixed bases 201. The two sets of bases 203 are slidably connected to the two sets of light bars 202. A rotating shaft 204 is rotatably mounted at the top of the support plate 103, and a first gear 205 is mounted at the top of the rotating shaft 204. Each set of bases 203 is respectively provided with a… A set of movable plates 208, each with a set of guide plates 209 at its outer end, and a set of movable rods 207 fixedly mounted on each guide plate 209. Each set of movable rods 207 has a rack at its inner end, and both racks mesh with gears 205. The movable rods 207 are slidably connected to another set of guide plates 209. A cylinder 206 is mounted at the bottom of a support plate 103. A vertical plate is mounted at the bottom of a base 203. The support plate 103 has a second strip-shaped opening, through which the vertical plate extends to the bottom of the support plate 103. The cylinder 206... The mobile end is connected to the vertical plate. Each set of mobile plates 208 is equipped with a clamping plate assembly, the height of which is adjustable. The top of each set of mobile plates 208 passes through a set of first-order strip openings 104. It should be noted that the guide bar 202, as a guiding element, has a smooth and wear-resistant coating (such as a hard chrome plating or ceramic coating) on ​​its outer wall to reduce sliding friction and extend its service life. At the same time, a dustproof sealing ring is provided at the sliding fit between the guide bar 202 and the base 203 to prevent processing debris from entering the sliding gap and causing jamming. The first cylinder 206 is a double-acting cylinder, which is supplied with air by an external air source and controlled by the controller 1. 02 The control valve realizes the extension and retraction action. As an alternative, the No. 1 cylinder 206 can also be replaced by a hydraulic cylinder or an electric push rod to adapt to different load or cleanliness requirements. The rotating shaft 204 is rotatably supported on the support plate 103 through the bearing seat. The bearing seat is provided with a grease filling port and a dust cover to ensure smooth long-term rotation. It should be noted that the sliding fit of the moving rod 207 through the guide plate 209 can also be provided with a linear bearing or copper sleeve to reduce wear. The centering clamping assembly adopts a modular design as a whole. Each component is fixed to the support plate 103 by bolts, which is convenient for disassembly and maintenance.

[0031] Furthermore, the clamping plate assembly includes a U-shaped seat 301, a clamping plate 302, a horizontal plate 303, a first spring 304, a first telescopic rod 305, a pressure plate 306, and an inclined end 307. Each set of movable plates 208 is provided with three strip-shaped openings. The U-shaped seat 301 is fitted onto the outside of the movable plate 208. Bolts and nuts pass through the three strip-shaped openings to fix the U-shaped seat 301. The clamping plate 302 is installed on the U-shaped seat 301. A horizontal plate 303 is provided at the top of the clamping plate 302. A groove is provided at the bottom of the horizontal plate 303. The pressure plate 306 is slidably disposed in the groove. A first spring 304 and a first telescopic rod 305 are respectively provided at the top of the pressure plate 306. The bottom end of plate 306, away from clamping plate 302, is provided with a beveled end 307. It is important to understand that the U-shaped seat 301 and the movable plate 208 are fixed together by bolts and nuts passing through the third strip opening, allowing the height of the clamping plate assembly to be flexibly adjusted according to the actual height of the injection mold. The adjustment range is limited by the stroke specified by the length of the third strip opening. Adjustment only requires loosening the bolts and nuts, sliding the U-shaped seat 301 to the target position, and then re-locking it. The inner end face of clamping plate 302 (i.e., the side facing the injection mold) is provided with anti-slip protrusions 308 to increase clamping friction and prevent longitudinal slippage of the mold after clamping. The beveled end of pressure plate 306... End 307 extends inclined from bottom to top and from the outside to the inside, with an inclination angle preferably between 30° and 60°. When the two sets of clamping plates 302 are mirror images of each other, the inclined end 307 preferentially contacts the upper edges on both sides of the injection mold. Under the action of horizontal clamping force, the inclined end 307 is forced to slide upward and compress the first spring 304 and the first telescopic rod 305 due to the reaction force of the mold edges. This causes the pressure plate 306 to retract into the groove of the horizontal plate 303. After the clamping plates 302 are clamped in place, the bottom plane of the pressure plate 306 is pressed against the top corner area of ​​the injection mold under the return force of the first spring 304, realizing the synchronous connection of horizontal clamping and top pre-compression. As an alternative, spring 304 can be replaced by a gas spring or an elastic rubber pad, and telescopic rod 305 can be replaced by a sliding guide post structure. The clamping plate 302 and the U-shaped seat 301 can be fixedly connected by welding, riveting or integral casting. The cross-sectional shape of the anti-slip protrusion 308 can be hemispherical, pyramidal or strip-shaped, all of which are equivalent alternatives that are easy for those skilled in the art to think of. It should be pointed out that the pressure plate 306 is at risk of wear due to long-term sliding in the groove. Therefore, the inner wall of the groove can be inlaid with wear-resistant copper liners or coated with a self-lubricating coating. At the same time, the sliding surface of the pressure plate 306 can be provided with a lubricating oil groove to reduce frictional resistance.

[0032] Furthermore, the top-fixing assembly includes a second cylinder 401, a lifting frame 402, a top plate 403, a pressure block 404, and upright plates 405. Two sets of upright plates 405 are provided at the top of the housing 101, with the top of each set of upright plates 405 fixedly connected to the bottom of the top plate 403. A second cylinder 401 is provided at the top of the top plate 403, and a lifting frame 402 is provided at the bottom moving end of the second cylinder 401. The lifting frame 402 is slidably fitted onto the outside of the two sets of upright plates 405. A pressure block 404 is provided at the bottom end; the second cylinder 401 is electrically connected to the controller 102; a chamber is provided inside the upright plate 405; furthermore, a vertical rod is provided at the top of the lifting frame 402, and the vertical rod is slidably connected to the top plate 403 to improve the guiding accuracy and anti-eccentric load capacity of the lifting frame 402 in vertical movement; a reinforcing plate 406 is provided between the housing 101 and the upright plate 405 to increase the connection firmness and bending strength; an anti-slip pad 407 is provided at the bottom end of the pressure block 404. For example, rubber pads or polyurethane pads) to prevent indentations on the mold surface and increase the coefficient of friction when the top is pressed; it should be clear that the second cylinder 401 is a double-acting cylinder, and its extension and retraction are controlled by the controller 102 through the electromagnetic reversing valve to control the direction of compressed air in and out. As an alternative, the second cylinder 401 can also be replaced by a hydraulic cylinder or an electric cylinder. The sliding sleeve of the lifting frame 402 can be provided with a guide sleeve or ball guide sleeve at the mating surface on the outside of the two sets of vertical plates 405 to reduce friction. The sliding mating part between the vertical rod and the top plate 403 also needs to be provided with a sealed dustproof structure to prevent external dust from entering from the sliding gap. The fixed connection between the top plate 403 and the vertical plate 405 is preferably welded or high-strength bolted to ensure overall rigidity. The number of reinforcing plates 406 can be two or more sets and symmetrically arranged on both sides of the vertical plate 405. As an alternative, the reinforcing plates 406 can be replaced with triangular ribs or integrally cast reinforcing ribs.

[0033] Furthermore, the limiting assembly includes a crankshaft 501, a bushing 502, a limiting plate 503, a connecting rod 504, a second gear 505, a second rotating shaft 506, a second rack 507, a sprocket 508, a chain 509, a second spring 510, a guide rod 511, and a slider 512. A set of limiting plates 503 is slidably disposed in the left-right direction near the outer end of the internal cavity of each set of vertical plates 405, and the limiting plates 503 can horizontally extend or retract into the inner and outer end faces of the cavity. Each set of cavities is rotatably supported by a crankshaft 501 and a second rotating shaft 506 via bearing seats, both of which are rotatably supported in the front-back direction. Extending horizontally, crankshaft 501 and second rotating shaft 506 are located in the inner and outer end regions of the chamber, respectively. A set of bushings 502 is rotatably fitted onto the eccentric journal of each crankshaft 501, and a self-lubricating bearing is provided between the bushing 502 and the crankshaft 501 to reduce rotational friction. A connecting rod 504 is fixedly connected to the outer wall of the bushing 502, extending horizontally. The end of the connecting rod 504 is hinged to the inner end face of the limiting plate 503 via a pin. When the crankshaft 501 rotates, the rotational motion is converted into linear reciprocating sliding of the limiting plate 503 through the bushing 502 and connecting rod 504. Second rotating shaft 506... A second gear 505 is coaxially fixedly mounted on the upper shaft 501, and the second gear 505 is located in the middle of the second rotating shaft 506. A sprocket 508 is coaxially fixedly mounted on both the crankshaft 501 and the second rotating shaft 506, and the two sets of sprockets 508 are connected by a chain 509 to achieve synchronous rotation. Two sets of guide rods 511 are horizontally fixedly arranged on the inner end of the chamber (i.e., the side closest to the center of the device), and the two sets of guide rods 511 are arranged parallel to each other in the vertical direction. A slider 512 is integrally mounted on both the front and rear ends of the second rack 507, and the slider 512 has guide holes that precisely match the outer diameter of the guide rod 511. 12 is slidably mounted on two sets of guide rods 511 so that the second rack 507 can only slide in the left and right directions. Each set of guide rods 511 is fitted with a set of second springs 510, with one end of the second spring 510 abutting against the inner wall of the cavity and the other end abutting against the outer side of the slider 512. The spring force of the second spring 510 is set to push the two sets of second racks 507 into the cavity (i.e., the mirror-like direction). The tooth surface of the second rack 507 faces the second gear 505 and meshes with the outer gear ring of the second gear 505 to convert the linear displacement of the second rack 507 into the rotational motion of the second gear 505.It is important to understand that the linkage logic between the limiting component and the centering clamping component is as follows: In the normal initial state, the two sets of moving plates 208 are in a mirror-image, open position. The outer end faces of the moving plates 208 press against the inner end faces of the two sets of second racks 507, overcoming the elastic force of the second spring 510 and pushing the second rack 507 outward from the cavity. When the second rack 507 moves outward, it drives the second gear 505 to rotate and transmits the rotational motion to the crankshaft 501 through the second rotating shaft 506, sprocket 508, and chain 509. When the crankshaft 501 rotates, it transmits the rotational motion through the bushing 502 and connecting rod. 504 drives the limiting plate 503 to extend outward from the outer end face of the chamber. At this time, the top of the limiting plate 503 is exactly below the bottom of the lifting frame 402, forming a mechanical block against the descent of the lifting frame 402 and locking the downward movement of the top fixing assembly. When the two sets of moving plates 208 are driven by the first cylinder 206 to move in a mirror image to clamp the mold, the outer ends of the moving plates 208 gradually disengage from the pressure on the inner end of the second rack 507. The second spring 510 releases its elastic force to push the slider 512 to slide inward along the guide rod 511. The two sets of second racks 507 move in a mirror image towards the inside of the chamber simultaneously. When rack 507 moves inward, it drives gear 505 to rotate in the opposite direction. This, in turn, causes crankshaft 501 to rotate in the opposite direction via the aforementioned transmission chain, which in turn drives connecting rod 504 to pull the limiting plate 503 back from below the bottom of lifting frame 402 into the cavity. This releases the restriction on the descent of lifting frame 402, allowing the top-fixing assembly to press down. This achieves the mandatory operation sequence of "first horizontal centering and clamping, then top-pressing and fixing." As an alternative, chain 509 transmission can be replaced with synchronous toothed belt transmission to reduce transmission backlash and noise, and spring 510 can be replaced with a gas spring or torsion spring. To achieve different preload characteristics, wear-resistant guide rails or linear guide rails can be installed at the sliding contact between the limiting plate 503 and the inner wall of the cavity to reduce sliding resistance and wear rate. The self-lubricating bearing between the crankshaft 501 and the bushing 502 can be a copper-based powder metallurgy oil-impregnated bearing to extend the maintenance-free cycle. It should be noted that the sliding contact between the slider 512 and the guide rod 511 of the second rack 507 should be regularly lubricated with grease, and the surface of the guide rod 511 should be hardened to improve wear resistance. A protective cover can be installed on the outside of the transmission mechanism between the sprocket 508 and the chain 509 to prevent foreign objects from entering the meshing area.

[0034] like Figures 1 to 10As shown, the present invention provides an injection mold opening device with a position adjustment function. During operation, the U-shaped base 301 is first adjusted to a fixed position on the moving plate 208 according to the height of the injection mold, so that the bottom end of the horizontal plate 303 is approximately flush with the top of the mold. Then, the mold is placed at the top of the housing 101 and positioned between two sets of clamping plates 302. The controller 102 activates the first cylinder 206 to shorten it. The first cylinder 206 pulls a base 203 along the light bar 202 towards the center via a vertical plate. This base 203 drives the moving plate 208 and guide plate 209 to move synchronously. The guide plate 209... The moving rod 207 drives the first gear 205 to rotate via its first rack. The first gear 205 then drives another set of moving rods 207 and guide plates 209 in the opposite direction via the first rack on the other side. This causes the two sets of bases 203 and moving plates 208 to synchronously mirror and move closer together along the two sets of light bars 202. The two sets of moving plates 208 drive the clamping plates 302 to close towards the center. The anti-slip protrusions 308 contact the two side walls of the mold and gradually clamp, achieving horizontal centering and bidirectional clamping of the mold. During this clamping process, the two sets of inclined ends 307 contact the upper edges of the two sides of the mold. The upward component of the reaction force from the mold edges forces the mold to press... Plate 306 overcomes the elastic force of spring 304 and slides upward into the groove of horizontal plate 303. After clamping plate 302 is fully clamped, pressure plate 306 is pressed downward against the top corner area of ​​the mold under the return elastic force of spring 304, realizing the synchronous linkage of horizontal clamping and top pre-clamping. At the same time, when the two sets of moving plates 208 move inward, their outer end faces gradually disengage from the pressure on the inner end of rack 507. The compressed spring 510 releases its elastic force and pushes slider 512 to slide along guide rod 511 into the cavity. The two sets of racks 507 move inward synchronously and drive gear 505 to rotate. The second rotating shaft 506 rotates and transmits the rotational motion to the crankshaft 501 through the sprocket 508 and chain 509. When the crankshaft 501 rotates, it pulls the limiting plate 503 from below the bottom of the lifting frame 402 to the cavity of the vertical plate 405 through the bushing 502 and connecting rod 504, thereby removing the mechanical obstruction to the descent of the lifting frame 402. Then, the controller 102 starts the extension of the second cylinder 401, driving the lifting frame 402 to slide down along the two sets of vertical plates 405. The pressure block 404 then moves down until the anti-slip pad 407 presses against the center area of ​​the top of the mold, completing the final fixation of the mold.After injection molding is completed, controller 102 controls cylinder 401 to shorten, raising the lifting frame 402. Then, cylinder 206 extends, causing the two sets of moving plates 208 and clamping plates 302 to open outwards synchronously via the reverse motion of the gear and rack transmission chain, releasing the mold. Simultaneously, the outer end face of moving plate 208 presses against the inner end face of rack 507, overcoming the elasticity of spring 510 and pushing rack 507. Rack 507 drives gear 505 to rotate in the opposite direction, and through the reverse transmission of sprocket 508, chain 509, and crankshaft 501, the limiting plate 503 extends outwards from inside the cavity to directly below the bottom of the lifting frame 402, restoring the mechanical locking of the pressing assembly and completing the entire work cycle.

[0035] The main function achieved by this invention is to realize a forced sequential control of "first horizontal centering and clamping, then top pressing and fixing" by using a pure mechanical transmission method. It can reliably prevent misoperation without the need for additional sensors, position detection switches or PLC timing programming, thereby improving the safety and reliability of the equipment.

[0036] The injection mold opening device with position adjustment function of the present invention can be installed, connected or set in a common mechanical way, and can be implemented as long as it can achieve its beneficial effect. The controller (102), cylinder No. 1 (206) and cylinder No. 2 (401) of the injection mold opening device with position adjustment function of the present invention are commercially available. Technical personnel in this industry only need to install and operate it according to the accompanying instruction manual, without the need for technical personnel in this field to make creative efforts.

[0037] The above description is only a preferred embodiment of the present invention. It should be noted that for those skilled in the art, several improvements and modifications can be made without departing from the technical principles of the present invention, and these improvements and modifications should also be considered within the scope of protection of the present invention.

Claims

1. A mold opening device for injection molds with position adjustment function, comprising a housing (101), a controller (102), a support plate (103), and a first strip opening (104), wherein the controller (102) is mounted on the housing (101), the support plate (103) is provided inside the housing (101), and two sets of first strip openings (104) are provided at the top of the housing (101), characterized in that, It also includes a centering clamping component, a top fixing component and a limiting component. The centering clamping component is provided inside the housing (101), and the top fixing component is provided at the top of the housing (101). The limiting component is installed on the top fixing component. The centering clamping component and the limiting component cooperate to limit the top fixing component. The centering clamping component and the top fixing component are both electrically connected to the controller (102).

2. The injection mold opening device with position adjustment function as described in claim 1, characterized in that, The centering clamping assembly includes a fixed base (201), a light bar (202), a base (203), a rotating shaft (204), a first gear (205), a first cylinder (206), a moving rod (207), a moving plate (208), a guide plate (209), and a clamping plate assembly. Two pairs of fixed bases (201) are provided at the top of the support plate (103), and a set of light bars (202) are fixedly installed on each pair of fixed bases (201). The two sets of bases (203) are slidably connected to the two sets of light bars (202). A rotating shaft (204) is rotatably installed at the top of the support plate (103), and a first gear (205) is provided at the top of the rotating shaft (204). A set of moving plates (208) is provided at the top of each set of bases (203), and a set of guide plates (209) is provided at the outer end of each set of moving plates (208). Each guide plate (209) is fixedly equipped with a set of moving rods (207). Each set of moving rods (207) is equipped with a rack at its inner end. Both sets of racks are meshed with gears (205). The moving rods (207) are slidably connected to another set of guide plates (209). A cylinder (206) is provided at the bottom of the support plate (103). A vertical plate is provided at the bottom of a set of bases (203). The support plate (103) is provided with a second strip opening. The vertical plate extends to the bottom of the support plate (103) through the second strip opening. The moving end of the cylinder (206) is connected to the vertical plate. Each set of moving plates (208) is equipped with a clamping plate assembly. The height of the clamping plate assembly is adjustable. The top of each set of moving plates (208) passes through a set of first strip openings (104).

3. The injection mold opening device with position adjustment function as described in claim 2, characterized in that, The clamping plate assembly includes a U-shaped seat (301), a clamping plate (302), a horizontal plate (303), a first spring (304), a first telescopic rod (305), a pressure plate (306), and a beveled end (307). Each set of movable plates (208) is provided with a third strip opening. The U-shaped seat (301) is fitted on the outside of the movable plate (208). Bolts and nuts pass through the third strip opening to fix the U-shaped seat (301). The clamping plate (302) is installed on the U-shaped seat (301). A horizontal plate (303) is provided at the top of the clamping plate (302). A groove is provided at the bottom of the horizontal plate (303). The pressure plate (306) is slidably disposed in the groove. A first spring (304) and a first telescopic rod (305) are respectively provided at the top of the pressure plate (306). A beveled end (307) is provided at the bottom of the pressure plate (306) away from the clamping plate (302).

4. The injection mold opening device with position adjustment function as described in claim 3, characterized in that, The top-fixing assembly includes a second cylinder (401), a lifting frame (402), a top plate (403), a pressure block (404), and a vertical plate (405). The top of the housing (101) is provided with two sets of vertical plates (405). The top of each set of vertical plates (405) is fixedly connected to the bottom of the top plate (403). The top of the top plate (403) is provided with a second cylinder (401). The bottom moving end of the second cylinder (401) is provided with a lifting frame (402). The lifting frame (402) is slidably fitted on the outside of the two sets of vertical plates (405). The bottom end of the lifting frame (402) is provided with a pressure block (404). The second cylinder (401) is electrically connected to the controller (102). The vertical plate (405) is provided with a chamber inside.

5. The injection mold opening device with position adjustment function as described in claim 4, characterized in that, The limiting assembly includes a crankshaft (501), a bushing (502), a limiting plate (503), a connecting rod (504), a second gear (505), a second rotating shaft (506), a second rack (507), a sprocket (508), a chain (509), a second spring (510), a guide rod (511), and a slider (512). A limiting plate (503) is slidably installed at the outer end of each chamber. A crankshaft (501) and a second rotating shaft (506) are rotatably installed in each chamber. A bushing (502) is rotatably fitted on each crankshaft (501). A connecting rod (504) is installed at the outer end of the bushing (502). One end of the connecting rod (504) is connected to the limiting plate. One end of the position plate (503) is hinged. A second gear (505) is provided on the second rotating shaft (506). A sprocket (508) is provided on the crankshaft (501) and the second rotating shaft (506). The two sets of sprockets (508) are driven by a chain (509). Two sets of guide rods (511) are fixedly arranged laterally in the chamber. Slider (512) is provided on both sides of the second rack (507). The slider (512) is slidably connected to the guide rod (511). The second spring (510) is fitted on the guide rod (511). The second spring (510) causes the two sets of second racks (507) to move in a mirror-like approaching direction. The second rack (507) meshes with the second gear (505).

6. The injection mold opening device with position adjustment function as described in claim 4, characterized in that, It also includes a reinforcing plate (406), and a reinforcing plate (406) is provided between the box body (101) and the upright plate (405).

7. The injection mold opening device with position adjustment function as described in claim 4, characterized in that, It also includes an anti-slip pad (407), and the bottom of the pressure block (404) is provided with an anti-slip pad (407).

8. The injection mold opening device with position adjustment function as described in claim 3, characterized in that, It also includes anti-slip protrusions (308), and the inner ends of the two sets of clamps (302) are respectively provided with anti-slip protrusions (308).

9. The injection mold opening device with position adjustment function as described in claim 4, characterized in that, The top of the lifting frame (402) is provided with a vertical rod, which is slidably connected to the top plate (403).

10. The injection mold opening device with position adjustment function as described in claim 2, characterized in that, The outer wall of the light bar (202) is provided with a smooth and wear-resistant coating.

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