Mold clamping tool for injection molding machine

Abstract

The utility model discloses a mold clamping tool for an injection molding machine, and relates to the technical field of clamping tools. The device comprises a supporting table, a support, a clamping assembly, a telescopic assembly and a regulation and control assembly. Other instruments are used for pushing a mold to the position near the center of the supporting table and the center of the support, the periphery of the mold is clamped through cooperation of the clamping assembly and the telescopic assembly, the mold is adjusted through the adjusting and controlling assembly all the time during operation, and therefore safe operation of the device is guaranteed, damage of the mold to parts in the device is reduced, and the whole device is easy and convenient to operate and high in practicability. And the mold can quickly enter or exit from the interior of the device under the overall layout, so that the working efficiency is improved, and the service life of the device is prolonged under the action of the regulation and control assembly.

Description

Technical Field

[0001] The utility model relates to the technical field of clamping tools, in particular to a mold clamping tool for an injection molding machine. Background Art

[0002] A clamping tool is a device used to fasten workpieces during processing. In the injection molding industry, injection molds are often quickly fastened. Since injection molds are divided into upper and lower parts, for the clamping tool, it needs to have high precision to ensure that the mold can be at the exact center position of the device.

[0003] The deficiencies of the existing technical solutions are as follows: The current technology usually requires a lifting operation to send the mold into the clamping tool, and then the clamping parts at one end are driven to clamp the mold. The lifting operation often takes more time, which undoubtedly reduces the production efficiency in a production factory. Moreover, in the clamping method of driving the clamping parts to move unidirectionally, the clamping tool often needs to push the mold, resulting in a large load on the device and low safety performance. Summary of the Utility Model

[0004] The technical problem to be solved by the utility model is to provide a mold clamping tool for an injection molding machine that is convenient to operate, has rapid mold replacement, and is reliable in safety.

[0005] In response to the above technical problem, the technical solution adopted by the utility model is: The device includes a support table, a bracket, a clamping assembly, a telescopic assembly, and a control assembly. A bracket is provided in the middle of the support table, a clamping assembly is provided on the bracket, and a telescopic assembly and a control assembly are provided on the clamping assembly.

[0006] Further, the clamping assembly includes a control mechanism, a translation mechanism, and a fastening mechanism. The control mechanism is provided below the bracket, the translation mechanism is provided on the control mechanism and is above the bracket, and the fastening mechanism is provided on the translation mechanism.

[0007] Further, the control mechanism includes a synchronous motor, a bidirectional worm, a slider, and a worm gear. Bidirectional worms are rotatably installed on both sides of the bracket. Two worm gears are symmetrically arranged along the axis direction of the bidirectional worm. Upper and lower chutes are provided on the bracket. The worm gears are meshed with both bidirectional worms. One end of the worm gear is slidably installed on the lower chute of the bracket, and the other end of the worm gear is rotatably installed on the slider. The slider is slidably installed on the upper chute of the bracket. One end of the bidirectional worm is coaxially fixed on the output shaft of the synchronous motor, and the synchronous motor is fixed on the bracket.

[0008] Furthermore, the translation mechanism includes a sliding plate, a gear, a rack, and an L-shaped plate. The sliding plate is fixed on the slider, and limiting grooves are provided on both sides of the sliding plate. Racks are slidably installed on the limiting grooves on both sides of the sliding plate. The racks are meshed with the gears, the gears are coaxially connected to the worm gear, and the gears are rotatably installed on the sliding plate, wherein an L-shaped plate is fixed on the rack away from the center position of the bracket, and the other end of the L-shaped plate is fixed on the fastening mechanism.

[0009] Furthermore, the fastening mechanism includes a toggle plate, a limiting block, and a clamping plate. The clamping plate is vertically installed at the long side of the sliding plate. Four groups of Z-shaped grooves are symmetrically opened on the clamping plate. A groove exists between the clamping plate and the sliding plate after installation. Toggle plates are slidably installed at both ends of the groove between the clamping plate and the sliding plate. An L-shaped plate is fixed on the toggle plate away from the clamping plate. A vertical groove is opened on the toggle plate. A limiting block is slidably installed on the vertical groove of the toggle plate.

[0010] Furthermore, the telescopic assembly includes rod member 1 and rod member 2. Rod member 1 is slidably installed on the Z-shaped groove of the splint, and rod member 1 is slidably installed on the vertical groove of the toggle plate. One end of rod member 1 at the top is fixed on a limiting block, and the limiting block is used to maintain the state of rod member 1 to prevent rod member 1 from rotating on its own, and rod member 2 is slidably installed inside the other end of rod member 1, and the other end of rod member 2 is slidably installed in rod member 1 on the other side.

[0011] Furthermore, the regulating component includes a detection mechanism and an adjustment mechanism. The detection mechanism includes a pressure sensor, a spring, and a contact block. The pressure sensor is fixed on one side of the splint close to the gear, and a contact block is slidably installed on the other side of the splint. The pressure sensor and the contact block are connected by a spring.

[0012] Furthermore, the adjustment mechanism includes an adjusting motor, a roller, a sprocket, and a chain. The adjusting motor is fixed on a bracket, and a roller is coaxially fixed on the output shaft of the adjusting motor. Two rollers are symmetrically installed on the bracket for rotation, and the axis of the roller is perpendicular to the direction of the upper slide groove on the bracket. A sprocket is coaxially fixed in the middle of the rollers, and the two sprockets are connected by a chain.

[0013] Compared with the prior art, the utility model has the following advantages: (1) the utility model provides a clamping assembly and a telescopic assembly, thereby ensuring that the device can realize a two-way clamping operation on the mold, wherein the translation mechanism and the fastening mechanism are started through the cooperation of the worm gear in the control mechanism, and the mold is finally clamped by the clamping plate and the telescopic assembly, so the device is simple and has higher controllability.

[0014] (2) The utility model is provided with a regulating component, in which a detection mechanism is used to determine the position of the clamp and the mold. The detection mechanism controls the opening and closing of the adjustment mechanism, thereby ensuring that the main clamping parts will not directly push the mold to adjust the position, greatly improving the safety performance of the device and prolonging the service life of the device.

[0015] (3) The utility model can use the adjustment mechanism to push the mold in time, and the overall layout enables the center of the device to push the mold into the device through other pushing devices without other operations, thereby greatly improving work efficiency. BRIEF DESCRIPTION OF THE DRAWINGS

[0016] Figure 1 The utility model is a schematic diagram of the external structure of a mold clamping tool for an injection molding machine.

[0017] Figure 2 It is a structural diagram of the control mechanism.

[0018] Figure 3 It is a schematic diagram of the structure at the sliding plate.

[0019] Figure 4 yes Figure 3 Schematic diagram of the structure from another perspective.

[0020] Figure 5 It is a structural diagram of the fastening mechanism.

[0021] Figure 6 It is a structural diagram of the telescopic component.

[0022] Figure 7 It is a structural diagram of the detection mechanism.

[0023] Figure 8 It is a structural diagram of the adjustment mechanism.

[0024] Figure 9 It is a schematic diagram of the structure on the roller.

[0025] Figure numbers: 1-support table; 2-bracket; 101-synchronous motor; 102-bidirectional worm; 103-slider; 104-worm wheel; 1001-upper slide groove; 1002-lower slide groove; 201-sliding plate; 202-gear; 203-rack; 204-L-shaped plate; 2001-limiting groove; 301-sliding plate; 302-limiting block; 303-clamp; 3001-Z-shaped groove; 401-rod member 1; 402-rod member 2; 501-pressure sensor; 502-spring; 503-contact block; 601-adjusting motor; 602-roller; 603-sprocket; 604-chain. DETAILED DESCRIPTION

[0026] The technical solution of the present utility model will be further described below in conjunction with the accompanying drawings and through specific embodiments.

[0027] Among them, the accompanying drawings are only for illustrative purposes, showing only schematic diagrams, not physical diagrams, and should not be construed as a limitation of this patent; in order to better illustrate the embodiments of the present utility model, some components in the accompanying drawings will be omitted, enlarged or reduced, which do not represent the dimensions of the actual product; for those skilled in the art, it is understandable that some well-known structures and their descriptions in the accompanying drawings may be omitted.

[0028] Embodiment: As Figures 1 - 9 shown, a mold clamping tooling for an injection molding machine includes a support table 1, a bracket 2, a clamping assembly, a telescopic assembly, and a control assembly. A bracket 2 is arranged in the middle of the support table 1, a clamping assembly is arranged on the bracket 2, and a telescopic assembly and a control assembly are arranged on the clamping assembly;

[0029] The clamping assembly includes a control mechanism, a translation mechanism, and a fastening mechanism. The control mechanism is arranged below the bracket 2, the translation mechanism is arranged on the control mechanism, and the translation mechanism is above the bracket 2, and the fastening mechanism is arranged on the translation mechanism;

[0030] The control mechanism includes a synchronous motor 101, a bidirectional worm 102, a slider 103, and a worm gear 104. Bidirectional worms 102 are rotatably installed on both sides of the bracket 2, two worm gears 104 are symmetrically arranged along the axis direction of the bidirectional worm 102, upper sliding grooves 1001 and lower sliding grooves 1002 are formed on the bracket 2, the worm gears 104 are meshed with both bidirectional worms 102, one end of the worm gear 104 is slidably installed on the lower sliding groove 1002 of the bracket 2, the other end of the worm gear 104 is rotatably installed on the slider 103, the slider 103 is slidably installed on the upper sliding groove 1001 of the bracket 2, one end of the bidirectional worm 102 is coaxially fixed on the output shaft of the synchronous motor 101, and the synchronous motor 101 is fixed on the bracket 2.

[0031] The translation mechanism includes a sliding plate 201, a gear 202, a rack 203, and an L-shaped plate member 204. The sliding plate 201 is fixed on the slider 103, limiting grooves 2001 are arranged on both sides of the sliding plate 201, racks 203 are slidably installed on the limiting grooves 2001 on both sides of the sliding plate 201, the racks 203 are meshed with the gear 202, the gear 202 is coaxially connected with the worm gear 104, and the gear 202 is rotatably installed on the sliding plate 201. Among them, an L-shaped plate member 204 is fixed on the rack 203 far from the center position of the bracket 2, and the other end of the L-shaped plate member 204 is fixed on the fastening mechanism.

[0032] The fastening mechanism includes a toggle plate 301, a limiting block 302, and a clamping plate 303. The clamping plate 303 is vertically installed at the long side of the sliding plate 201. Four groups of Z-shaped grooves 3001 are symmetrically arranged on the clamping plate 303. There is a groove between the installed clamping plate 303 and the sliding plate 201. Toggle plates 301 are slidably installed at both ends of the groove between the clamping plate 303 and the sliding plate 201. An L-shaped plate member 204 is fixed on the toggle plate 301 away from the clamping plate 303. A vertical groove is provided on the toggle plate 301, and a limiting block 302 is slidably installed on the vertical groove of the toggle plate 301.

[0033] The telescopic assembly includes a rod one 401 and a rod two 402. Rods one 401 are slidably installed on the Z-shaped grooves 3001 of the clamping plate 303. At the same time, the rods one 401 are slidably installed on the vertical grooves of the toggle plates 301. One end of the rod one 401 at the top is fixed on the limiting block 302. The limiting block 302 is used to maintain the state of the rod one 401 and prevent the rod one 401 from rotating. And the other end of the rod one 401 slidably installs the rod two 402 inside, and the other end of the rod two 402 is slidably installed in the other rod one 401.

[0034] The regulation assembly includes a detection mechanism and an adjustment mechanism. The detection mechanism includes a pressure sensor 501, a spring 502, and a contact block 503. The pressure sensor 501 is fixed on one side of the clamping plate 303 close to the gear 202. The contact block 503 is slidably installed on the other side of the clamping plate 303. The pressure sensor 501 and the contact block 503 are connected by the spring 502.

[0035] The adjustment mechanism includes an adjustment motor 601, a roller 602, a sprocket 603, and a chain 604. The adjustment motor 601 is fixed on the bracket 2. A roller 602 is coaxially fixed on the output shaft of the adjustment motor 601. Two rollers 602 are symmetrically rotatably installed on the bracket 2. The axis of the roller 602 is perpendicular to the direction of the upper chute 1001 on the bracket 2. Sprockets 603 are coaxially fixed in the middle of the rollers 602. The two sprockets 603 are connected by a chain 604.

[0036] The working principle of the utility model is as follows: before the device is operated, the mold is pushed into the device from between the two clamping plates 303, the mold contacts the roller 602, and the two synchronous motors 101 are started. The output shafts of the synchronous motors 101 rotate in the same direction. The synchronous motors 101 cause the two bidirectional worm gears 102 to rotate in the same direction on the bracket 2. Under the action of the two bidirectional worm gears 102, the worm wheel 104 is caused to slide with the slider 103 on the upper slide groove 1001 of the bracket 2, and the other end of the worm wheel 104 will slide on the lower slide groove 1002 of the bracket 2. The slider 103 moves toward the center position of the bracket 2, and at the same time drives the sliding plate 201 fixed on the slider 103 and other parts on the sliding plate 201 to approach the mold together. During the movement, the detection mechanism at the center of the clamping plate 303 first contacts the mold.

[0037] When the contact block 503 contacts the mold, the contact block 503 and the clamping plate 303 slide relative to each other, during which the spring 502 is compressed. The pressure sensor 501 located on the other side of the clamping plate 303 detects the pressure generated by the spring 502, thereby driving the adjusting motor 601, so that the adjusting motor 601 drives the roller 602 to rotate on the bracket 2, and at the same time drives the sprocket 603 fixed on the roller 602 to rotate, and drives the other roller 602 to rotate after being transmitted through the chain 604. Under the action of the roller 602, the mold is driven to move, and its moving direction is the same as the original moving direction of the contact block 503 that contacts the mold, thereby ensuring that the device does not directly cause the mold to slide, thereby extending the service life of the device. When the contact blocks 503 on the two clamping plates 303 are both attached to the clamping plates 303, the spring 502 is compressed to the shortest, and the pressure on the pressure sensor 501 is the largest. At this time, the driving of the two synchronous motors 101 and the adjusting motor 601 is stopped.

[0038] The two synchronous motors 101 are driven at the same time, so that the output shafts of the two synchronous motors 101 rotate in opposite directions, causing the bidirectional worm 102 to rotate, so that the worm wheel 104 rotates on the slider 103 under the action of the two bidirectional worms 102, and the worm wheel 104 drives the gear 202 to rotate on the sliding plate 201, and at the same time, the racks 203 meshed on both sides will slide towards each other on the limiting grooves 2001 of the sliding plate 201, and the racks 203 drive the toggle plate 301 on the L-shaped plate 204 to slide on the clamping plate 303, and the Under the joint action of the Z-shaped groove 3001 of the splint 303 and the vertical groove of the toggle plate 301, the rod 401 finally slides along the Z-shaped groove 3001 of the splint 303, and finally the rod 401 is attached to the mold and the side of the mold is clamped. In order to adapt to the clamping operation of molds of different specifications, a rod 2 402 is provided to ensure normal operation, and there will be a height difference change when the rod 1 401 slides on the Z-shaped groove 3001 of the splint 303, thereby ensuring that the mold does not need to be disassembled by the device when passing through the device.

Claims

1. A mold clamping tool for an injection molding machine, characterized in that: It comprises a support platform (1), a bracket (2), a clamping assembly, a telescopic assembly, and an adjusting assembly, wherein the bracket (2) is arranged in the middle of the support platform (1), the bracket (2) is arranged with the clamping assembly, and the telescopic assembly and the adjusting assembly are arranged on the clamping assembly; The clamping assembly comprises a control mechanism, a translation mechanism, and a fastening mechanism, wherein the control mechanism is arranged below the bracket (2), the translation mechanism is arranged on the control mechanism, and the translation mechanism is above the bracket (2), and the fastening mechanism is arranged on the translation mechanism; The control mechanism comprises a synchronous motor (101), a bidirectional worm (102), a slider (103), and a worm wheel (104); bidirectional worms (102) are rotatably mounted on both sides of the bracket (2); two worm wheels (104) are symmetrically arranged along the axis direction of the bidirectional worm (102); an upper slide groove (1001) and a lower slide groove (1002) are provided on the bracket (2); the worm wheels (104) are meshed with the two bidirectional worms (102); one end of the worm wheel (104) is slidably mounted on the lower slide groove (1002) of the bracket (2); the other end of the worm wheel (104) is arranged on the slider (103); the slider (103) is arranged on the upper slide groove (1001) of the bracket (2); and a synchronous motor (101) is arranged on one end of the bidirectional worm (102).

2. The mold clamping tool for an injection molding machine according to claim 1, characterized in that: The translation mechanism comprises a sliding plate (201), a gear (202), a rack (203), and an L-shaped plate (204); the sliding plate (201) is fixed on the slider (103); limiting grooves (2001) are provided on both sides of the sliding plate (201); racks (203) are slidably mounted on the limiting grooves (2001) on both sides of the sliding plate (201); the racks (203) are meshed with the gears (202); the gears (202) are coaxially connected to the worm gear (104); and the gears (202) are rotatably mounted on the sliding plate (201); an L-shaped plate (204) is fixed on the rack (203) away from the center of the bracket (2); and the other end of the L-shaped plate (204) is fixed on the fastening mechanism.

3. The mold clamping tool for an injection molding machine according to claim 2, characterized in that: The fastening mechanism comprises a toggle plate (301), a limiting block (302), and a clamping plate (303); the clamping plate (303) is vertically mounted on the long side of the sliding plate (201); four groups of Z-shaped grooves (3001) are symmetrically provided on the clamping plate (303); a groove is provided between the clamping plate (303) and the sliding plate (201) after installation; the toggle plates (301) are slidably installed at both ends of the groove between the clamping plate (303) and the sliding plate (201); an L-shaped plate (204) is fixed on the toggle plate (301) away from the clamping plate (303); a vertical groove is provided on the toggle plate (301); and a limiting block (302) is slidably installed on the vertical groove of the toggle plate (301).

4. The mold clamping tool for an injection molding machine according to claim 3, characterized in that: The telescopic assembly comprises a rod member 1 (401) and a rod member 2 (402), wherein the rod member 1 (401) is slidably mounted on the Z-shaped groove (3001) of the clamping plate (303), and the rod member 1 (401) is slidably mounted on the vertical groove of the toggle plate (301), and one end of the rod member 1 (401) located at the top is arranged on a limiting block (302), and the limiting block (302) is used to maintain the state of the rod member 1 (401) to prevent the rod member 1 (401) from rotating, and the rod member 2 (402) is slidably mounted inside the other end of the rod member 1 (401), and the other end of the rod member 2 (402) is slidably mounted in the rod member 1 (401) on the other side.

5. The mold clamping tool for an injection molding machine according to claim 1, characterized in that: The regulating component comprises a detection mechanism and an adjustment mechanism. The detection mechanism comprises a pressure sensor (501), a spring (502), and a contact block (503). The pressure sensor (501) is fixed to a side of the clamping plate (303) close to the gear (202). The contact block (503) is slidably mounted on the other side of the clamping plate (303). The pressure sensor (501) and the contact block (503) are connected by a spring (502).

6. The mold clamping tool for an injection molding machine according to claim 5, characterized in that: The adjustment mechanism comprises an adjustment motor (601), a roller (602), a sprocket (603), and a chain (604); the adjustment motor (601) is arranged on the bracket (2); a roller (602) is coaxially fixed on the output shaft of the adjustment motor (601); two rollers (602) are symmetrically arranged on the bracket (2); the axes of the rollers (602) are perpendicular to the direction of the slide groove (1001) on the bracket (2); a sprocket (603) is arranged in the middle of each roller (602); and the two sprockets (603) are connected by a chain (604).

Images