A positioning mechanism for a precision mold

Abstract

The utility model provides a positioning mechanism of precision mould relates to mould positioning technical field, including positioning detection hole, the inside fixed mounting of positioning detection hole has the pressure -bearing piece of detection pressure, the pressure -bearing piece signal connection has the main control unit of automatic control, the main control unit signal connection has the external display of data display and alarm. The utility model's advantage lies in: the positioning detection hole that a plurality of linear arrangement and depth gradually changes is established in the top four corners of lower mould base, and sets up the pressure -bearing piece of pressure detection in the inside of positioning detection hole, is provided with the elastic positioning needle of guiding positioning in the bottom of upper mould base, judges the die accuracy of die closing by the pressure change of extruding pressure -bearing piece by the elastic positioning needle insertion inside positioning detection hole, can judge the die closing deviation of precision mould according to the pressure display number on external display, detects the precision of die closing in real time.

Description

Technical Field

[0001] This utility model relates to the field of mold positioning technology, and in particular to a positioning mechanism for a precision mold. Background Technology

[0002] Molds are various molds and tools used in the mold industry to obtain the desired products through injection molding, blow molding, extrusion, die casting or forging, smelting, stamping and other methods. Precision molds are also a type of mold. With the continuous improvement of the requirements for molds, precision mold technology has developed rapidly. Positioning mechanisms are an important component of precision molds.

[0003] However, most existing mold positioning mechanisms use guide pillars and guide sleeves for positioning, which makes it difficult to detect the positioning of the mold. As the guide pillars and guide sleeves wear out, the gaps increase, causing the precision mold to shift during mold closing, affecting the positioning accuracy. It is also difficult to detect the positioning deviation of the mold in time, which is not conducive to ensuring the precision of mold use. Utility Model Content

[0004] Therefore, the purpose of this utility model is to propose a positioning mechanism for a precision mold, so as to solve the problems mentioned in the background art and overcome the shortcomings of the existing technology.

[0005] To achieve the above objectives, one embodiment of this utility model provides a positioning mechanism for a precision mold, including a lower mold base and an upper mold base for opening and closing the mold. The lower mold base has guide posts at its four corners for positioning. Guide sleeves fixed inside the upper mold base are fitted onto the surfaces of the guide posts. The top of the lower mold base has a plurality of linearly arrayed positioning detection holes of different depths. Pressure plates for detecting pressure are fixedly installed inside the positioning detection holes. The pressure plates are signal-connected to a main control unit for automated control. The main control unit is signal-connected to an external display for data display and alarm functions. Elastic positioning pins for positioning are fixedly installed at the bottom of the upper mold base.

[0006] Preferably, in any of the above embodiments, the lower mold base has a formed mold cavity inside, the guide pillars and guide sleeves are coaxially distributed, and the guide sleeves are fixedly installed inside the four corners of the upper mold base.

[0007] The above technical solution is adopted as follows: the mold cavity inside the lower mold base is the key area for product molding, providing molding space for the product. The guide pillars and guide sleeves are coaxially distributed, and the guide sleeves are fixed inside the four corners of the upper mold base. They can provide preliminary positioning guidance for the upper and lower mold bases during the mold opening and closing process, ensuring the basic accuracy of the mold opening and closing action and reducing the possibility of deviation during mold closing.

[0008] Preferably, in any of the above schemes, the depth of the positioning detection hole gradually decreases from the inside to the outside, and the positioning detection hole is distributed at the four corners of the top of the lower mold base.

[0009] The above technical solution involves positioning detection holes located at the four corners of the top of the lower mold base. The design of the holes gradually decreasing in depth from the inside to the outside provides different depths of insertion space for the elastic positioning pins. The depth variation allows for more accurate judgment of the mold closing state based on the pressure difference generated by the elastic positioning pins inserting into the positioning detection holes at different depths when the mold is closed, effectively improving the accuracy of positioning detection.

[0010] Preferably, in any of the above embodiments, the pressure plate includes a pressure sensor connected to the main control unit and a pressure-bearing extrusion plate. The pressure sensor is fixedly installed inside the positioning detection hole, and the extrusion plate located inside the positioning detection hole is fixedly installed at the detection end of the pressure sensor.

[0011] The above technical solution is adopted: the pressure sensor of the pressure plate is fixed in the positioning detection hole, and the detection end is connected to the extrusion plate. When the elastic positioning pin is inserted into the positioning detection hole to extrude the extrusion plate, the pressure sensor can detect the pressure change in real time and transmit the data to the main control unit. Through the pressure change, the insertion status of the elastic positioning pin can be reflected intuitively, thereby judging whether the mold closing is accurate.

[0012] Preferably, in any of the above embodiments, the external display includes a display stand for support and a display screen for signal connection to the main control unit. The display stand is engaged with the bottom of the lower mold base, the display screen is fixedly installed inside the display stand, and fastening blocks for clamping are fixedly installed at both ends of the display stand.

[0013] The above technical solution is adopted: the display support of the external display is engaged at the bottom of the lower mold base to provide stable support for the display screen. The display screen is connected to the main control unit to receive and display the pressure data transmitted by the main control unit. The operator can observe the data on the display screen to understand the pressure change between the elastic positioning pin and the pressure plate when the mold is closed, thereby judging the mold closing accuracy.

[0014] Preferably, in any of the above embodiments, the fastening block includes a fastening spring for support and a clamping plate for fastening. The fastening spring is fixedly installed at both ends of the display support, and a clamping plate that moves inside the display support is fixedly installed at one end of the fastening spring.

[0015] The above technical solution is adopted: the fastening spring of the fastening block is installed at both ends of the display support, and one end is connected to the clamping plate. When the external display is installed, the fastening spring provides elastic force to the clamping plate, so that the clamping plate tightly clamps the lower mold base, ensuring that the display support is stably installed at the bottom of the lower mold base, avoiding the external display from shaking or falling off during the use of the mold, and ensuring the stability of the data display.

[0016] Preferably, in any of the above embodiments, the elastic positioning pin includes a positioning spring that provides support and a guide pin that performs positioning. The positioning spring is fixedly installed inside the upper mold base, and one end of the positioning spring is fixedly installed with a guide pin that moves inside the upper mold base.

[0017] The above technical solution is adopted as follows: the positioning spring of the elastic positioning pin is installed inside the upper mold base, and one end is connected to the guide pin. When the mold is closed, the guide pin is inserted into the positioning detection hole, and the positioning spring plays a buffering and resetting role. When the mold is misaligned, the positioning spring can retract the guide pin into the upper mold base to avoid damage caused by hard collision. During normal mold closing, the guide pin is inserted into the positioning detection hole to squeeze the pressure plate, thereby realizing the detection of the mold closing accuracy and ensuring the stability of the elastic positioning pin and the accuracy of the detection.

[0018] Compared with the prior art, the advantages and beneficial effects of this utility model are as follows:

[0019] 1. Several linearly arranged positioning detection holes with gradually varying depths are made at the four corners of the top of the lower mold base. Pressure plates for pressure detection are installed inside the positioning detection holes. At the same time, elastic positioning pins for guiding and positioning are installed at the bottom of the upper mold base. The pressure change generated by the elastic positioning pins inserting into the positioning detection holes and squeezing the pressure plates is used to judge the mold closing accuracy. When the mold is misaligned, the elastic positioning pins will retract into the upper mold base under the squeezing action, and no pressure will be detected. Alternatively, the elastic positioning pins may enter the positioning detection holes, and the detected pressure value will change. The mold closing deviation of the precision mold can be judged according to the pressure display on the external display, and the mold closing accuracy can be detected in real time to ensure the precision of mold use.

[0020] 2. The elasticity of the elastic positioning pin itself can effectively prevent damage to the elastic positioning pin during the mold closing process, thus ensuring the stability of the elastic positioning pin's operation and ensuring the accuracy of precision judgment during the mold closing process.

[0021] Additional aspects and advantages of this invention will be set forth in part in the description which follows, and in part will be obvious from the description, or may be learned by practice of the invention. Attached Figure Description

[0022] The above and / or additional aspects and advantages of this utility model will become apparent and readily understood from the description of the embodiments taken in conjunction with the following drawings, in which:

[0023] Figure 1 This is a schematic diagram of the structure according to an embodiment of the present utility model;

[0024] Figure 2 This is a cross-sectional structural diagram of the lower mold base according to an embodiment of the present utility model;

[0025] Figure 3 This is a cross-sectional structural diagram of the guide post according to an embodiment of the present utility model;

[0026] Figure 4 This is a cross-sectional structural diagram of an external display according to an embodiment of the present invention;

[0027] Figure 5 According to the embodiments of this utility model Figure 2 Enlarged structural diagram at point A;

[0028] Among them: 1-lower mold base, 2-upper mold base, 3-guide post, 4-guide sleeve, 5-positioning detection hole, 6-pressure plate, 61-pressure sensor, 62-extrusion plate, 7-external display, 71-display support, 72-display screen, 8-elastic positioning pin, 81-positioning spring, 82-guide pin, 9-fastening block, 91-fastening spring, 92-clamping plate. Detailed Implementation

[0029] The present invention will be further described below with reference to the accompanying drawings, but the scope of protection of the present invention is not limited to the following description.

[0030] like Figure 1-5 As shown, a positioning mechanism for a precision mold according to an embodiment of the present invention includes a lower mold base 1 and an upper mold base 2 for opening and closing the mold. The lower mold base 1 has guide posts 3 for positioning at its four corners. Guide sleeves 4 fixed inside the upper mold base 2 are fitted onto the surface of the guide posts 3. The top of the lower mold base 1 has a plurality of linear array positioning detection holes 5 of different depths. Pressure carrier plates 6 for detecting pressure are fixedly installed inside the positioning detection holes 5. The pressure carrier plates 6 are signal-connected to a main control unit for automatic control. The main control unit is signal-connected to an external display 7 for displaying data and alarms. Elastic positioning pins 8 for positioning are fixedly installed at the bottom of the upper mold base 2.

[0031] Preferably, in any of the above schemes, the lower mold base 1 has a formed mold cavity inside, the guide post 3 and the guide sleeve 4 are coaxially distributed, and the guide sleeve 4 is fixedly installed inside the four corners of the upper mold base 2.

[0032] The above technical solution is adopted: the mold cavity inside the lower mold base 1 is the key area for product molding, providing molding space for the product. The guide pillars 3 and guide sleeves 4 are coaxially distributed, and the guide sleeves 4 are fixed inside the four corners of the upper mold base 2. They can provide preliminary positioning guidance for the upper mold base 2 and the lower mold base 1 during the mold opening and closing process, ensuring the basic accuracy of the mold opening and closing action and reducing the possibility of deviation during mold closing.

[0033] Preferably, in any of the above schemes, the depth of the positioning detection hole 5 gradually decreases from the inside to the outside, and the positioning detection hole 5 is distributed at the four corners of the top of the lower mold base 1.

[0034] The above technical solution is adopted: the positioning detection holes 5 are opened at the four corners of the top of the lower mold base 1, and the depth of the holes gradually decreases from the inside to the outside. This design provides the elastic positioning pins 8 with insertion space at different depths. The depth change can be used to more accurately judge the mold closing state based on the pressure difference generated by the elastic positioning pins 8 being inserted into the positioning detection holes 5 at different depths when the mold is closed, which effectively improves the accuracy of positioning detection.

[0035] Preferably, in any of the above schemes, the pressure plate 6 includes a pressure sensor 61 connected to the main control unit and a pressure-bearing extrusion plate 62. The pressure sensor 61 is fixedly installed inside the positioning detection hole 5, and the extrusion plate 62 located inside the positioning detection hole 5 is fixedly installed at the detection end of the pressure sensor 61.

[0036] The above technical solution is adopted: the pressure sensor 61 of the pressure plate 6 is fixed in the positioning detection hole 5, and the detection end is connected to the extrusion plate 62. When the elastic positioning pin 8 is inserted into the positioning detection hole 5 to extrude the extrusion plate 62, the pressure sensor 61 can detect the pressure change in real time and transmit the data to the main control unit. Through the pressure change, the insertion status of the elastic positioning pin 8 can be reflected intuitively, thereby judging whether the mold closing is accurate.

[0037] Preferably, the external display 7 includes a display support 71 for support and a display screen 72 for signal connection to the main control unit. The display support 71 is engaged with the bottom of the lower mold base 1. The display screen 72 is fixedly installed inside the display support 71. Fastening blocks 9 are fixedly installed at both ends of the display support 71 for clamping.

[0038] Using the above technical solution: The display support 71 of the external display 7 is engaged at the bottom of the lower mold base 1, providing stable support for the display screen 72. The display screen 72 is connected to the main control unit, receives the pressure data transmitted from the main control unit and displays it. The operator can observe the data on the display screen 72 to understand the pressure change between the elastic positioning pin 8 and the pressure plate 6 when the mold is closed, thereby judging the mold closing accuracy.

[0039] Preferably, the fastening block 9 includes a fastening spring 91 for support and a clamping plate 92 for fastening. The fastening spring 91 is fixedly installed at both ends of the display support 71, and a clamping plate 92 that moves inside the display support 71 is fixedly installed at one end of the fastening spring 91.

[0040] The above technical solution is adopted: the fastening spring 91 of the fastening block 9 is installed at both ends of the display support 71, and one end is connected to the clamping plate 92. When the external display 7 is installed, the fastening spring 91 provides elastic force to the clamping plate 92, so that the clamping plate 92 tightly clamps the lower mold base 1, ensuring that the display support 71 is stably installed at the bottom of the lower mold base 1, avoiding the external display 7 from shaking or falling off during the use of the mold, and ensuring the stability of the data display.

[0041] Preferably, in any of the above embodiments, the elastic positioning pin 8 includes a positioning spring 81 that provides support and a guide pin 82 that performs positioning. The positioning spring 81 is fixedly installed inside the upper mold base 2, and one end of the positioning spring 81 is fixedly installed with the guide pin 82 that moves inside the upper mold base 2.

[0042] The above technical solution is adopted: the positioning spring 81 of the elastic positioning pin 8 is installed inside the upper mold base 2, and one end is connected to the guide pin 82. When the mold is closed, the guide pin 82 is inserted into the positioning detection hole 5, and the positioning spring 81 plays a buffering and resetting role. When the mold is tilted, the positioning spring 81 can make the guide pin 82 retract into the upper mold base 2 to avoid damage caused by hard collision. During normal mold closing, the guide pin 82 is inserted into the positioning detection hole 5 to squeeze the pressure plate 6, thereby realizing the detection of the mold closing accuracy and ensuring the stability of the operation of the elastic positioning pin 8 and the accuracy of the detection.

[0043] The positioning mechanism of this precision mold operates on the following principle:

[0044] During the mold opening and closing process, the lower mold base 1 and the upper mold base 2 are initially positioned by the guide pillar 3 and the guide sleeve 4. When the mold closing begins, the upper mold base 2 moves downward, and the elastic positioning pin 8 at its bottom gradually approaches the positioning detection hole 5 at the top of the lower mold base 1. The elastic positioning pin 8 is composed of a positioning spring 81 and a guide pin 82. The positioning spring 81 provides buffering and restoring force. When the guide pin 82 is inserted into the positioning detection hole 5, it will squeeze the internal pressure plate 6. After the pressure sensor 61 of the pressure plate 6 detects the pressure change, it transmits the data to the main control unit. Since the positioning detection holes 5 have different depths, if the mold closing is accurate, the guide pin 82 will generate a specific pressure value when inserted into the positioning detection hole 5 at the corresponding depth. If the mold is tilted, the insertion of the guide pin 82 will change, and the pressure value will also change. After receiving the data, the main control unit displays the pressure information on the display screen 72 of the external display 7. Once the pressure value is abnormal, the operator can detect it in time and judge that there is a deviation in the mold closing, so as to realize the real-time detection of the mold closing accuracy and ensure the precision of the mold use.

[0045] Compared with the prior art, the present invention has the following advantages:

[0046] 1. Several linearly arranged positioning detection holes 5 with gradually varying depths are opened at the four corners of the top of the lower mold base 1. Pressure plates 6 for pressure detection are set inside the positioning detection holes 5. At the same time, elastic positioning pins 8 for guiding and positioning are set at the bottom of the upper mold base 2. The pressure change generated by the elastic positioning pins 8 being inserted into the positioning detection holes 5 and squeezing the pressure plates 6 is used to judge the mold closing accuracy. When the mold is deviated, the elastic positioning pins 8 will retract into the upper mold base 2 under the squeezing action, and no pressure will be detected. Alternatively, the elastic positioning pins 8 may enter the positioning detection holes 5, and the detected pressure value will change. The mold closing deviation of the precision mold can be judged according to the pressure display on the external display 7, and the mold closing accuracy can be detected in real time to ensure the precision of mold use.

[0047] 2. The elasticity of the elastic positioning pin 8 itself can effectively prevent damage to the elastic positioning pin 8 during the mold skewing and closing process, and can effectively ensure the stability of the elastic positioning pin 8 in operation, thereby ensuring the accuracy of precision judgment during the precision mold closing process.

Claims

1. A positioning mechanism for a precision mold, comprising a lower mold base (1) and an upper mold base (2) for opening and closing the mold, wherein guide posts (3) for positioning are provided at the four corners of the lower mold base (1), and guide sleeves (4) fixed inside the upper mold base (2) are fitted onto the surface of the guide posts (3), characterized in that: The lower mold base (1) has several linear array positioning detection holes (5) of different depths. Pressure carrier plates (6) for detecting pressure are fixedly installed inside the positioning detection holes (5). The pressure carrier plates (6) are connected to a main control unit for automatic control. The main control unit is connected to an external display (7) for displaying data and alarms. An elastic positioning pin (8) for positioning is fixedly installed at the bottom of the upper mold base (2).

2. The positioning mechanism for a precision mold as described in claim 1, characterized in that: The lower mold base (1) has a molded cavity inside, the guide post (3) and the guide sleeve (4) are coaxially distributed, and the guide sleeve (4) is fixedly installed inside the four corners of the upper mold base (2).

3. The positioning mechanism for a precision mold as described in claim 2, characterized in that: The depth of the positioning detection hole (5) gradually decreases from the inside to the outside, and the positioning detection hole (5) is distributed at the four corners of the top of the lower mold base (1).

4. The positioning mechanism for a precision mold as described in claim 3, characterized in that: The pressure plate (6) includes a pressure sensor (61) connected to the main control unit and a pressure-bearing extrusion plate (62). The pressure sensor (61) is fixedly installed inside the positioning detection hole (5), and the extrusion plate (62) located inside the positioning detection hole (5) is fixedly installed at the detection end of the pressure sensor (61).

5. The positioning mechanism for a precision mold as described in claim 4, characterized in that: The external display (7) includes a display stand (71) for support and a display screen (72) for signal connection to the main control unit. The display stand (71) is engaged with the bottom of the lower mold base (1). The display screen (72) is fixedly installed inside the display stand (71). Fastening blocks (9) for clamping are fixedly installed at both ends of the display stand (71).

6. The positioning mechanism for a precision mold as described in claim 5, characterized in that: The fastening block (9) includes a fastening spring (91) for support and a clamping plate (92) for fastening. The fastening spring (91) is fixedly installed at both ends of the display support (71), and a clamping plate (92) that moves inside the display support (71) is fixedly installed at one end of the fastening spring (91).

7. The positioning mechanism for a precision mold as described in claim 6, characterized in that: The elastic positioning pin (8) includes a positioning spring (81) that provides support and a guide pin (82) that performs positioning. The positioning spring (81) is fixedly installed inside the upper mold base (2), and one end of the positioning spring (81) is fixedly installed with a guide pin (82) that moves inside the upper mold base (2).

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