Injection molding mold capable of accurately positioning

Abstract

The utility model discloses an injection molding mold capable of accurately positioning, and relates to the technical field of molds. The clamping device comprises a fixing frame and a supporting plate, a clamping mechanism and a lifting mechanism are arranged on the fixing frame, the clamping mechanism comprises a bearing fixedly connected to the fixing frame, a motor is fixedly connected to the bottom face of the bearing, a rotating rod is fixedly connected to the output end of the motor, a connecting plate is fixedly connected to the top end of the rotating rod, and the connecting plate is fixedly connected to the supporting plate. The bottom face of the supporting plate is rotationally connected with a rotating disc, the connecting plate penetrates through the rotating disc and is slidably connected with the rotating disc, a plurality of arc-shaped connecting plates are hinged to the bottom face of the rotating disc, a plurality of sliding grooves are formed in the supporting plate, the inner walls of the sliding grooves are slidably connected with sliding blocks, and the arc-shaped connecting plates are hinged to the bottom faces of the sliding blocks. According to the utility model, the clamping mechanism is arranged, so that the lower mold is always positioned at the central point of the supporting plate, and the injection molding precision of a product is ensured.

Description

Technical Field

[0001] The utility model belongs to the technical field of molds, and particularly relates to an injection molding mold which can be precisely positioned. Background Art

[0002] In the prior art, after searching, it was found that a Chinese patent disclosed "a multi-station injection molding mold that can be precisely positioned", and its application number is "CN202211191264.0". The patent mainly provides a telescopic motor to perform a transmission function, so that the telescopic motor rotates through the telescopic transmission pattern, so that the pressing injection molding device extends upward.

[0003] However, the mold of the device is fixed inside the device, and it is cumbersome to replace the mold once it needs to be replaced. When fixing the mold, the existing replaceable mold device does not use a precise positioning structure, and cannot ensure that the newly installed mold is completely aligned with the position of the injection molding machine head, affecting the shape and dimensional accuracy of the product. Utility Model Content

[0004] The purpose of the utility model is to provide an injection molding mold that can be accurately positioned. By providing a clamping mechanism, not only can the lower mold be clamped and fixed, but the lower mold can also be always positioned at the center point of a support plate, thereby ensuring the accuracy of product injection molding. This solves the problem that when the existing replaceable mold device fixes the mold, due to the lack of a precise positioning structure, it is impossible to ensure that the position of the newly installed mold is completely aligned with the injection molding machine head, thereby affecting the shape and size accuracy of the product.

[0005] In order to solve the above technical problems, the utility model is realized by the following technical solutions:

[0006] The utility model is an injection molding mold that can be precisely positioned, comprising a fixed frame and a support plate, wherein a clamping mechanism and a lifting mechanism are arranged on the fixed frame, and the clamping mechanism comprises a driving component, a limiting component and a buffer component;

[0007] The driving assembly includes a bearing fixedly connected to a fixed frame, a motor is fixedly connected to the bottom surface of the bearing, a rotating rod is fixedly connected to the output end of the motor, the rotating rod is fixedly connected to the inner wall of the bearing, the top of the rotating rod is fixedly connected to a connecting plate, the bottom surface of the supporting plate is rotatably connected to a turntable, the connecting plate passes through the turntable, the connecting plate is slidably connected to the turntable, a plurality of arc connecting plates are hingedly connected to the bottom surface of the turntable, a plurality of sliding grooves are provided on the supporting plate, the inner walls of a plurality of the sliding grooves are slidably connected to sliders, the ends of a plurality of the arc connecting plates away from the turntable are hinged to the bottom surface of the slider, and the top surfaces of a plurality of the sliders are fixedly connected to the fixed plate.

[0008] Furthermore, the limiting assembly includes a first groove formed on an inner wall of the slide slot, and the inner wall of the first groove is slidably connected to the slider.

[0009] Furthermore, the buffer assembly includes a first sliding rod passing through the slider, the first sliding rod is slidably connected to the slider, one end of the first sliding rod away from the fixed plate is fixedly connected to a clamping pad, the first sliding rod is sleeved with a first spring, the first spring is fixedly connected to the fixed plate, and one end of the first spring away from the fixed plate is fixedly connected to the clamping pad.

[0010] Furthermore, the lifting mechanism includes a lifting assembly, a mold assembly and a top mold assembly, the lifting assembly includes two hydraulic cylinders fixedly connected to the inner wall of the fixed frame, the output ends of the two hydraulic cylinders are fixedly connected to hydraulic rods, the top ends of the two hydraulic rods are fixedly connected to the bottom surface of the support plate, the top surface of the fixed frame is fixedly connected to a second sliding rod, the second sliding rod passes through the support plate, and the second sliding rod is slidably connected to the support plate.

[0011] Furthermore, the mold assembly includes a lower mold placed on the top surface of the support plate, an upper mold is placed on the top surface of the lower mold, bolts are threadedly connected between the lower mold and the upper mold, an injection cavity is arranged between the lower mold and the upper mold, and an injection port is opened on the top surface of the upper mold.

[0012] Furthermore, the top mold assembly includes a second groove arranged inside the lower mold, the inner wall of the second groove is fixedly connected to two third sliding rods, the inner wall of the second groove is slidably connected to a piston plate, the third sliding rod penetrates the piston plate, the third sliding rod is slidably connected to the piston plate, a second spring is sleeved on the third sliding rod, the bottom end of the second spring is fixedly connected to the top surface of the piston plate, the top end of the second spring is fixedly connected to the inner top wall of the second groove, the top surface of the piston plate is fixedly connected to a push rod, the push rod extends to the outside of the lower mold, and the push rod is slidably connected to the lower mold.

[0013] The utility model has the following beneficial effects:

[0014] 1. By providing a clamping mechanism, the connecting plate is always plugged into the turntable, so that when the motor drives the rotating rod to rotate, it can drive the turntable to rotate synchronously, and cooperate with the arc-shaped connecting plate to drive the slider on the arc-shaped connecting plate to slide in the slide groove, so that the four fixed plates can be close to or away from each other, which can not only clamp and fix the lower mold, but also make the lower mold always be positioned at the center point of the support plate, thereby ensuring the accuracy of product injection molding. The inner wall of the first groove cooperates with the slide groove, so that the slider can only slide back and forth in the slide groove to avoid dislocation. The clamping pad cooperates with the first spring, so that the clamping pad can buffer the pressure when clamping and fixing the four corners of the lower mold to avoid excessive pressure damaging the mold.

[0015] 2. By setting up a lifting mechanism, the second slide bar and the hydraulic rod cooperate with each other, so that the two hydraulic cylinders can drive the support plate to move up and down stably, and the lower mold and the upper mold are fixed by bolts for easy disassembly. The second spring and the third slide bar cooperate with each other. After loosening the bolts and fixing the lower mold, the two hydraulic cylinders can be driven to drive the support plate to move downward, so that the connecting plate passes through the hole groove at the center of the support plate, and the top of the connecting plate contacts the bottom surface of the piston plate. When the support plate continues to move downward, the connecting plate resists the piston plate, so that the piston plate moves upward, and the piston plate drives the ejector rod to move upward, so that the ejector rod can eject the workpiece after injection molding, so that the workpiece can be quickly demolded. The demolding step of this mechanism can be completed automatically without manual participation, which greatly improves production efficiency.

[0016] Of course, any product implementing the present invention does not necessarily need to achieve all of the advantages described above at the same time. BRIEF DESCRIPTION OF THE DRAWINGS

[0017] In order to more clearly illustrate the technical solutions of the embodiments of the utility model, the drawings required for describing the embodiments are briefly introduced below. Obviously, the drawings described below are only some embodiments of the utility model. For ordinary technicians in this field, other drawings can be obtained based on these drawings without creative work.

[0018] Figure 1 This is a schematic diagram of the overall structure of an injection molding mold that can be precisely positioned according to the utility model;

[0019] Figure 2 This is a structural schematic diagram of a clamping mechanism of an injection molding mold that can be accurately positioned according to the utility model;

[0020] Figure 3 This is a structural schematic diagram of a fixing plate of an injection molding mold that can be precisely positioned according to the utility model;

[0021] Figure 4 This is a structural schematic diagram of a lifting mechanism of an injection molding mold that can be accurately positioned according to the utility model;

[0022] Figure 5 This is a schematic cross-sectional structure diagram of a lower mold of an injection molding mold that can be precisely positioned according to the utility model;

[0023] Figure 6 The utility model is a kind of injection molding mold which can be accurately positioned Figure 3 Schematic diagram of the enlarged structure at point A in the middle.

[0024] In the accompanying drawings, the components represented by the reference numerals are listed as follows:

[0025] 1. Fixed frame; 2. Clamping mechanism; 3. Lifting mechanism; 4. Support plate; 21. Bearing; 22. Motor; 23. Turntable; 24. Connecting plate; 25. Turntable; 26. Arc-shaped connecting plate; 27. Slide groove; 28. Slider; 29. ​​Fixed plate; 291. First groove; 292. First slide bar; 293. Clamping pad; 294. First spring; 31. Hydraulic cylinder; 32. Hydraulic rod; 33. Second slide bar; 34. Lower mold; 35. Upper mold; 36. Bolt; 37. Injection cavity; 38. Injection port; 39. Second groove; 391. Third slide bar; 392. Piston plate; 393. Second spring; 394. Push rod. DETAILED DESCRIPTION

[0026] The following will be combined with the drawings in the embodiments of the utility model to clearly and completely describe the technical solutions in the embodiments of the utility model. Obviously, the described embodiments are only part of the embodiments of the utility model, not all of the embodiments. Based on the embodiments of the utility model, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the utility model.

[0027] See also Figure 1-6 As shown, the utility model is an injection molding mold that can be precisely positioned, including a fixed frame 1 and a support plate 4, a clamping mechanism 2 and a lifting mechanism 3 are arranged on the fixed frame 1, and the clamping mechanism 2 includes a driving component, a limiting component and a buffer component;

[0028] The driving assembly includes a bearing 21 fixedly connected to the fixed frame 1, a motor 22 is fixedly connected to the bottom surface of the bearing 21, a rotating rod 23 is fixedly connected to the output end of the motor 22, the rotating rod 23 is fixedly connected to the inner wall of the bearing 21, a connecting plate 24 is fixedly connected to the top of the rotating rod 23, a turntable 25 is rotatably connected to the bottom surface of the support plate 4, the connecting plate 24 penetrates the turntable 25, the connecting plate 24 is slidably connected to the turntable 25, a plurality of arc-shaped connecting plates 26 are hingedly connected to the bottom surface of the turntable 25, a plurality of slide grooves 27 are provided on the support plate 4, and sliders 28 are slidably connected to the inner walls of the plurality of slide grooves 27, the ends of the plurality of arc-shaped connecting plates 26 away from the turntable 25 are hingedly connected to the bottom surface of the slider 28, and the top surfaces of the plurality of sliders 28 are fixedly connected to the fixed plate 29.

[0029] Among them Figure 3 and Figure 6 As shown, the limiting assembly includes a first groove 291 provided on the inner wall of the slide slot 27 , and the inner wall of the first groove 291 is slidably connected to the slider 28 .

[0030] By providing a limiting assembly, the inner wall of the first groove 291 cooperates with the slide groove 27 so that the slider 28 can only slide back and forth in the slide groove 27 to avoid dislocation.

[0031] Among them Figure 3 and Figure 6 As shown, the buffer assembly includes a first slide bar 292 that passes through the slider 28, the first slide bar 292 is slidably connected to the slider 28, the end of the first slide bar 292 away from the fixed plate 29 is fixedly connected to the clamping pad 293, the first slide bar 292 is sleeved with a first spring 294, the first spring 294 is fixedly connected to the fixed plate 29, and the end of the first spring 294 away from the fixed plate 29 is fixedly connected to the clamping pad 293.

[0032] By providing a buffer assembly, the clamping pad 293 cooperates with the first spring 294 so that the clamping pad 293 can buffer the pressure when clamping and fixing the four corners of the lower mold 34 to avoid damage to the mold due to excessive pressure.

[0033] Among them Figure 4 As shown, the lifting mechanism 3 includes a lifting assembly, a mold assembly and a top mold assembly. The lifting assembly includes two hydraulic cylinders 31 fixedly connected to the inner wall of the fixed frame 1. The output ends of the two hydraulic cylinders 31 are fixedly connected to hydraulic rods 32. The top ends of the two hydraulic rods 32 are fixedly connected to the bottom surface of the support plate 4. The top surface of the fixed frame 1 is fixedly connected to a second sliding rod 33. The second sliding rod 33 passes through the support plate 4 and is slidably connected to the support plate 4.

[0034] By providing a lifting assembly, the second slide bar 33 cooperates with the hydraulic rod 32 so that the two hydraulic cylinders 31 can drive the support plate 4 to move up and down stably.

[0035] Among them Figure 5 As shown, the mold assembly includes a lower mold 34 placed on the top surface of the support plate 4, an upper mold 35 is placed on the top surface of the lower mold 34, a bolt 36 is threadedly connected between the lower mold 34 and the upper mold 35, an injection cavity 37 is arranged between the lower mold 34 and the upper mold 35, and an injection port 38 is opened on the top surface of the upper mold 35.

[0036] By setting the mold assembly, the lower mold 34 and the upper mold 35 are fixed by bolts 36, which is convenient for disassembly.

[0037] Among them Figure 5As shown, the top mold assembly includes a second groove 39 arranged inside the lower mold 34, the inner wall of the second groove 39 is fixedly connected with two third sliding rods 391, the inner wall of the second groove 39 is slidably connected with a piston plate 392, the third sliding rod 391 penetrates the piston plate 392, the third sliding rod 391 is slidably connected with the piston plate 392, a second spring 393 is sleeved on the third sliding rod 391, the bottom end of the second spring 393 is fixedly connected with the top surface of the piston plate 392, the top end of the second spring 393 is fixedly connected with the inner top wall of the second groove 39, the top surface of the piston plate 392 is fixedly connected with a push rod 394, the push rod 394 extends to the outside of the lower mold 34, and the push rod 394 is slidably connected to the lower mold 34.

[0038] By providing a top mold assembly, the second spring 393 and the third slide bar 391 cooperate with each other. After loosening the bolt 36 and fixing the lower mold 34, the two hydraulic cylinders 31 can be driven to drive the support plate 4 to move downward, so that the connecting plate 24 passes through the hole groove at the center of the support plate 4, and the top of the connecting plate 24 contacts the bottom surface of the piston plate 392. When the support plate 4 continues to move downward, the connecting plate 24 resists the piston plate 392, so that the piston plate 392 moves upward, and the piston plate 392 drives the ejector rod 394 to move upward, so that the ejector rod 394 can eject the workpiece after injection molding, so that the workpiece can be quickly demolded. The demolding step of this mechanism can be completed automatically without manual participation, which greatly improves production efficiency. After the connecting plate 24 is away from the piston plate 392, the second spring 393 is reset to move the piston plate 392 downward until the bottom surface of the piston plate 392 contacts the bottom wall of the second groove 39.

[0039] A specific application of this embodiment is as follows: by providing a clamping mechanism 2, the connecting plate 24 is always plugged into the turntable 25, so that when the motor 22 drives the rotating rod 23 to rotate, the turntable 25 can be driven to rotate synchronously, and the arc-shaped connecting plate 26 can be cooperated with to drive the slider 28 on the arc-shaped connecting plate 26 to slide in the slide groove 27, so that the four fixing plates 29 can be close to or away from each other, which can not only clamp and fix the lower mold 34, but also make the lower mold 34 always be positioned at the center point of the support plate 4, so as to ensure the accuracy of product injection molding, the inner wall of the first groove 291 cooperates with the slide groove 27, so that the slider 28 can only slide back and forth in the slide groove 27 to avoid dislocation, the clamping pad 293 cooperates with the first spring 294, so that the clamping pad 293 can buffer the pressure when clamping and fixing the four corners of the lower mold 34, so as to avoid excessive pressure damaging the mold; by providing a lifting mechanism 3, the second slide rod 33 cooperates with the hydraulic rod 32, so that the two hydraulic cylinders 31 can drive The support plate 4 moves up and down stably, and the lower mold 34 and the upper mold 35 are fixed by bolts 36 for easy disassembly. The second spring 393 cooperates with the third slide bar 391. After loosening the bolts 36 and fixing the lower mold 34, the two hydraulic cylinders 31 can be driven to drive the support plate 4 to move downward, so that the connecting plate 24 passes through the hole groove at the center of the support plate 4, and the top of the connecting plate 24 contacts the bottom surface of the piston plate 392. When the support plate 4 continues to move downward, the connecting plate 24 resists the piston plate 392, so that the piston plate 392 moves upward, and the piston plate 392 drives the push rod 394 to move upward, so that the push rod 394 can push out the workpiece after injection molding, so that the workpiece can be quickly demolded. The demolding step of the mechanism can be completed automatically without manual participation, which greatly improves the production efficiency. After the connecting plate 24 is away from the piston plate 392, the second spring 393 is reset to move the piston plate 392 downward until the bottom surface of the piston plate 392 contacts the inner bottom wall of the second groove 39.

[0040] In the description of this specification, the description with reference to the terms "one embodiment", "example", "specific example", etc. means that the specific features, structures, materials or characteristics described in conjunction with the embodiment or example are included in at least one embodiment or example of the utility model. In this specification, the schematic representation of the above terms does not necessarily refer to the same embodiment or example. Moreover, the specific features, structures, materials or characteristics described can be combined in any one or more embodiments or examples in a suitable manner.

[0041] The preferred embodiments of the utility model disclosed above are only used to help explain the utility model. The preferred embodiments do not describe all the details in detail, nor do they limit the utility model to the specific implementation methods described. Obviously, many modifications and changes can be made according to the content of this specification. This specification selects and specifically describes these embodiments in order to better explain the principles and practical applications of the utility model, so that technicians in the relevant technical field can well understand and use the utility model. The utility model is limited only by the claims and their full scope and equivalents.

Claims

1. A precisely positioned injection molding mold, comprising a fixed frame (1) and a support plate (4), characterized in that: The fixed frame (1) is provided with a clamping mechanism (2) and a lifting mechanism (3), and the clamping mechanism (2) comprises a driving component, a limiting component and a buffer component; The driving assembly comprises a bearing (21) fixedly connected to a fixed frame (1); a motor (22) is fixedly connected to the bottom surface of the bearing (21); a rotating rod (23) is fixedly connected to the output end of the motor (22); the rotating rod (23) is fixedly connected to the inner wall of the bearing (21); a connecting plate (24) is fixedly connected to the top of the rotating rod (23); a rotating disk (25) is rotatably connected to the bottom surface of the support plate (4); and the connecting plate (24) penetrates the rotating disk (25). ), the connecting plate (24) is slidably connected to the rotating disk (25), the bottom surface of the rotating disk (25) is hinged with a plurality of arc-shaped connecting plates (26), the supporting plate (4) is provided with a plurality of sliding grooves (27), the inner walls of the plurality of sliding grooves (27) are slidably connected with sliders (28), the ends of the plurality of arc-shaped connecting plates (26) away from the rotating disk (25) are hinged with the bottom surface of the sliders (28), and the top surfaces of the plurality of sliders (28) are fixedly connected with fixing plates (29).

2. The precisely positioned injection molding die according to claim 1, characterized in that: The limiting assembly comprises a first groove (291) provided on the inner wall of the slide groove (27), and the inner wall of the first groove (291) is slidably connected to the slide block (28).

3. The precisely positioned injection molding die according to claim 2, characterized in that: The buffer assembly includes a first slide bar (292) that passes through the slider (28), the first slide bar (292) is slidably connected to the slider (28), one end of the first slide bar (292) away from the fixed plate (29) is fixedly connected to a clamping pad (293), a first spring (294) is sleeved on the first slide bar (292), the first spring (294) is fixedly connected to the fixed plate (29), and one end of the first spring (294) away from the fixed plate (29) is fixedly connected to the clamping pad (293).

4. The precisely positioned injection molding die according to claim 1, characterized in that: The lifting mechanism (3) comprises a lifting assembly, a mold assembly and a top mold assembly. The lifting assembly comprises two hydraulic cylinders (31) fixedly connected to the inner wall of the fixed frame (1). The output ends of the two hydraulic cylinders (31) are fixedly connected to hydraulic rods (32). The top ends of the two hydraulic rods (32) are fixedly connected to the bottom surface of the support plate (4). The top surface of the fixed frame (1) is fixedly connected to a second sliding rod (33). The second sliding rod (33) passes through the support plate (4). The second sliding rod (33) is slidably connected to the support plate (4).

5. The precisely positioned injection molding die according to claim 4, characterized in that: The mold assembly comprises a lower mold (34) placed on the top surface of a support plate (4), an upper mold (35) is placed on the top surface of the lower mold (34), a bolt (36) is threadedly connected between the lower mold (34) and the upper mold (35), an injection cavity (37) is provided between the lower mold (34) and the upper mold (35), and an injection port (38) is provided on the top surface of the upper mold (35).

6. The precisely positioned injection molding die according to claim 5, characterized in that: The top mold assembly includes a second groove (39) arranged inside the lower mold (34), the inner wall of the second groove (39) is fixedly connected to two third sliding rods (391), the inner wall of the second groove (39) is slidably connected to a piston plate (392), the third sliding rod (391) penetrates the piston plate (392), the third sliding rod (391) is slidably connected to the piston plate (392), a second spring (393) is sleeved on the third sliding rod (391), the bottom end of the second spring (393) is fixedly connected to the top surface of the piston plate (392), the top end of the second spring (393) is fixedly connected to the inner top wall of the second groove (39), the top surface of the piston plate (392) is fixedly connected to a push rod (394), the push rod (394) extends to the outside of the lower mold (34), and the push rod (394) is slidably connected to the lower mold (34).

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