A mold opening frame depth detection jig

Abstract

The utility model discloses a mould open frame depth detection fixture, and positioning sleeve is equipped with the first through -hole and cavity for the penetration of its ontology from top to bottom is linked, is equipped with first screw connection area on the cavity, and one end of valve needle passes first through -hole and extends into the cavity, and the second screw connection area is equipped on the locking block lateral wall, and locking block extends into the cavity and abuts with valve needle, and at least part of the convexity in the cavity, and locking block is fixed on positioning sleeve through the second screw connection area and first screw connection area link, and the second through -hole that positioning disc is equipped with the penetration of its ontology, and valve needle passes second through -hole. The utility model utilizes the part valve needle of hot nozzle system itself and positioning sleeve, locking block, positioning disc combination into a measuring fixture, and the actual open frame depth is calculated through the data of measuring relevant components and the data of position relation between partial components, and the open frame depth that obtains is more accurate, and the limiting and positioning of detection fixture through positioning sleeve and positioning disc can guarantee the accuracy of measurement.

Description

Technical Field

[0001] This utility model relates to the field of mold testing device technology, and in particular to a mold opening depth detection fixture. Background Technology

[0002] In injection molding, as product appearance requirements become increasingly stringent, many products cannot be injected onto the outer surface and must be injected onto the reverse side. This results in the hot runner system and the mold's ejection system being in the same direction, requiring the hot runner nozzle to pass through multiple mold plates. (See attached image) Figure 6 As shown, the mold system includes a panel 101, a hot runner base plate 102, a B plate 103, a mold core 104, and an ejector plate 105. The hot runner base plate 102 has a manifold 1021 and a mounting groove 1020 for connecting the auxiliary hot nozzle 1a to the manifold 1021. A valve needle 10 is mounted on a cylinder 1011, and the hot nozzle 1a is mounted within an opening 100 connected to the mounting groove 1020. Because each mold plate has machining tolerances, the cumulative tolerances of multiple mold plates result in a relatively large error in the actual opening "H" value of the hot nozzle. If the actual "H" value is less than the design value in the drawing, the hot nozzle may be too long, risking damage to the mold core or the hot nozzle itself. If the "H" value is greater than the design value in the drawing, gaps may appear at the front end of the hot nozzle, causing problems such as discoloration and material defects.

[0003] To avoid the above problems, the actual "H" value needs to be measured during installation, and then the length of the hot nozzle should be adjusted according to the measured data. Utility Model Content

[0004] The purpose of this utility model is to provide a mold opening depth detection fixture. It uses the valve needle of the hot nozzle system itself, along with the positioning sleeve, locking block, and positioning plate, to form a measuring fixture. The actual opening depth is calculated by measuring the data of relevant components and the positional relationship between some components, resulting in a more accurate opening depth. Furthermore, the positioning sleeve and positioning plate limit and position the detection fixture to ensure the accuracy of the measurement.

[0005] To achieve the above objectives, the technical solution adopted by this utility model is: a mold opening depth detection fixture, comprising:

[0006] A valve needle that matches the mold.

[0007] The positioning sleeve has a first through hole and a cavity that are connected from top to bottom for penetrating its body. The cavity has a first threaded area. One end of the valve needle passes through the first through hole and extends into the cavity.

[0008] A locking block has a second threaded area on its side wall. The locking block extends into the cavity and abuts against the valve needle, and at least partially protrudes from the cavity. The locking block is connected to the first threaded area through the second threaded area and fixed to the positioning sleeve.

[0009] A positioning plate is used to be embedded in a mounting slot on a hot runner seat plate. The positioning plate has a second through hole that penetrates its body, and the valve needle passes through the second through hole.

[0010] As a further optimization, the valve needle includes a connected end body and a rod body, the end body being located within the cavity, and the rod body passing through the first through hole.

[0011] As a further optimization, the diameter of the cavity is larger than the diameter of the first through hole, and the end body abuts against the top wall of the cavity.

[0012] As a further optimization, the upper part of the cavity sidewall is provided with a first limiting ring for limiting the end body.

[0013] As a further optimization, the upper end of the locking block is provided with a ring-shaped clearance notch, which allows the upper end of the locking block to extend upward into the first limiting ring.

[0014] As a further optimization, the upper end of the locking block has a planar structure.

[0015] As a further optimization, a second limiting ring is provided at the lower part of the cavity sidewall, and the first screw connection area is located between the first limiting ring and the second limiting ring.

[0016] As a further optimization, a limiting surface is provided on the outer side wall of the lower part of the positioning sleeve, which ensures the stability and vertical accuracy of the positioning sleeve by cooperating with the corresponding position in the open frame.

[0017] As a further optimization, the positioning plate is provided with a lifting hole on the side of the second through hole, which facilitates the installation of a pull rope or similar device to easily remove the positioning plate from the mounting slot.

[0018] As a further optimization, the positioning sleeve, locking block, and positioning disc are made of metal.

[0019] Compared with the prior art, the present invention has the following beneficial effects:

[0020] 1. A measuring fixture is formed by combining the valve needle, positioning sleeve, locking block, and positioning plate of the hot nozzle system itself. The actual opening depth is calculated by measuring the data of relevant components and the positional relationship between some components, resulting in a more accurate opening depth.

[0021] 2. The dual positioning of the positioning sleeve and the positioning plate ensures that the measuring fixture will not deviate, thus guaranteeing the accuracy of the measurement. Attached Figure Description

[0022] Figure 1 This is a structural diagram of the present invention.

[0023] Figure 2 This is an exploded view of the present invention.

[0024] Figure 3 This is a cross-sectional view of the positioning sleeve of this utility model.

[0025] Figure 4 This is a cross-sectional view of the valve needle, positioning sleeve, and locking block of this utility model after they are connected.

[0026] Figure 5 This is a schematic diagram illustrating the application of this utility model.

[0027] Figure 6 This is a schematic diagram of a mold with an open frame. Detailed Implementation

[0028] The following are specific embodiments of the present invention, which are described in conjunction with the accompanying drawings. However, the present invention is not limited to these embodiments.

[0029] like Figures 1 to 4 As shown, a mold opening depth detection fixture includes a valve needle 10, a positioning sleeve 20, a locking block 30, and a positioning plate 40. The valve needle 10 is matched with the mold system. The positioning sleeve 20 has a first through hole 210 and a cavity 220 connected from top to bottom for penetrating its body. The middle part of the side wall of the cavity 220 has a first threaded area 221 (internal thread). One end of the valve needle 10 passes through the first through hole 210 and extends into the cavity 220. The side wall of the locking block 30 has a second threaded area 31 (external thread). The locking block 30 extends into the cavity 220 and abuts against the valve needle 10, and at least part of its lower part protrudes from the cavity 220. The locking block 30 is connected to the first threaded area 220 through the second threaded area 31 and thus fixed on the positioning sleeve 20. The positioning plate 40 is used to be embedded in the mounting groove of the hot runner seat plate. The positioning plate 40 has a second through hole 41 penetrating its body, and the valve needle 10 passes through the second through hole 41.

[0030] In this invention, the length of the valve needle 10 is customized according to the mold, that is, matched with the hot nozzle system, with its length set as L1, the height of the locking block 30 set as L2, and the thickness of the positioning plate 40 set as L3. Combined with... Figure 5As shown, when applying this utility model, one end of the valve needle 10 passes through the first through hole 210 of the positioning sleeve 20 and extends into the cavity 220. The locking block 30 extends upward from the lower end of the cavity 220 into the cavity 220 and is locked in the positioning sleeve 20 by the action of the second screw area 31 and the first screw area 221. The upper end of the locking block 30 abuts against the valve needle 10. Therefore, the valve needle 10, the positioning sleeve 20 and the locking block 30 form a longitudinally extending structure. Preferably, in order to achieve the integrity and operability of this longitudinally extending structure, the valve needle 10 includes connected ends. The valve needle 10 and the positioning sleeve 20 are assembled. The diameter of the end body 11 is larger than the diameter of the rod 12, so that the end body 11 is located inside the cavity 220. The rod 12 passes through the first through hole 210. That is, when assembling the valve needle 10 and the positioning sleeve 20, the valve needle 10 is inverted (end body 11 is below and rod 12 is above) and then extends into the cavity 220 from the bottom of the positioning sleeve 20. Finally, the end body 11 is located inside the cavity 220, and the rod 12 extends upward through the first through hole 210 and out of the positioning sleeve 20. Since the diameter of the cavity 220 is larger than the diameter of the first through hole 210, the end body 11 can abut against the cavity. On the top wall 222 of body 220, the upper end of locking block 30 abuts against end body 11, forming an integral structure that cannot be separated and maintains structural stability. The entire longitudinal extension structure can be removed by taking rod 12. The longitudinal extension structure composed of valve needle 10, positioning sleeve 20 and locking block 30 is inserted from the mounting groove 1020 on the hot runner seat plate 20 for hot nozzle into the opening frame 100 of the hot nozzle system (mounting groove 1020 is connected to the opening frame 100 and is located above the opening frame 100) until the lower end of locking block 30 is in contact with the gating on mold core 104. The positioning disk 40 is fitted onto the valve needle 10 (rod 12) through its second through hole 41 at the opening position. The positioning disk 40 falls into the mounting groove 1020 on the hot runner seat plate 102 to achieve positioning, which can ensure the vertical accuracy of the longitudinal extension structure (valve needle 10). Based on the above settings, by measuring the length of the rod 12 protruding above the positioning disk 40 and setting this length as L4, the depth H of the opening frame 100 can be calculated, H=L1+L2-L3-L4. The depth of the opening frame 100 is obtained by calculation instead of direct measurement.

[0031] This invention combines the valve needle 10, a component of the hot nozzle system, with the positioning sleeve 20, locking block 30, and positioning plate 40 to form a measuring fixture. By measuring the data of the relevant components (valve needle 10, locking block 30, and positioning plate 40) and the positional relationship between some components (the height of the valve needle 10 protruding from the positioning plate 40), the actual opening depth is calculated. The obtained opening depth is more accurate than that obtained by measurement. Furthermore, the dual positioning of the positioning sleeve 20 and the positioning plate 40 ensures that the measuring fixture will not shift, thus guaranteeing the accuracy of the measurement.

[0032] It should be noted that the length of the valve needle 10 is customized for this system, therefore the length of the testing fixture of this utility model is also customized for each system, ensuring the feasibility of this method. In addition, the valve needle 10 is integrated into the system, and the mold installation operator only needs to carry the positioning sleeve 20, locking block 30 and positioning plate 40. These parts are small and easy to carry; the positioning sleeve 20, locking block 30 and positioning plate 40 are compatible with the hot nozzle system (one type is provided for each series of hot nozzles), and have high versatility.

[0033] Preferably, the upper part of the side wall of the cavity 220 is provided with a first limiting ring 223 for limiting the end body 11. The radial stability of the end body 11 can be ensured by the contact or limitation between the side wall of the end body 11 and the side wall of the first limiting ring 223. Combined with the locking of the end body 11 by the locking block 30, the vertical accuracy of the valve needle 10 is ensured.

[0034] Furthermore, the upper end of the locking block 30 is provided with a ring-shaped clearance notch 32. Since the upper end of the locking block 30 needs to abut against the valve needle 10 (end body 11), when the height of the end body 11 is small, or it cannot protrude downwards from the first limiting ring 223, the existence of the clearance notch 32 allows the upper end of the locking block 30 to extend upwards into the first limiting ring 223 to achieve support and abutment against the end body 11. Preferably, the upper end of the locking block 30 is a planar structure, which can achieve stable support and abutment against the end body 11.

[0035] Preferably, a second limiting ring 224 is provided at the lower part of the side wall of the cavity 220, which can cooperate with the annular protrusion at the upper middle part of the locking block 30 to ensure the positional accuracy and stability of the locking block 30 within the cavity 220; the first screw connection area 221 is located between the first limiting ring 223 and the second limiting ring 224.

[0036] In addition, a limiting surface 225 is provided on the outer side wall of the lower part of the positioning sleeve 20. The limiting surface 225 is used to limit and abut against the vertical surface in the opening frame 100 for the mating tip position, which can ensure the vertical accuracy of the positioning sleeve 20 in the opening frame 100, thereby ensuring the vertical accuracy of the valve needle 10 and the locking block 20.

[0037] Preferably, the positioning plate 40 is provided with a lifting hole 42 on the side of the second through hole 41. A structure such as a pull rope can be installed in the lifting hole 42. By operating this structure, the positioning plate 40 can be easily taken out from the mounting groove 1020.

[0038] The positioning sleeve 20, locking block 30 and positioning disc 40 are made of metal, which has structural stability and can ensure the accuracy of data such as height.

[0039] The specific embodiments described herein are merely illustrative examples illustrating the spirit of this utility model. Those skilled in the art to which this utility model pertains may make various modifications or additions to the described specific embodiments or use similar methods to substitute them, without departing from the spirit of this utility model or exceeding the scope defined by the appended claims.

Claims

1. A fixture for detecting the opening depth of a mold, characterized in that, include: A valve needle that matches the mold. The positioning sleeve has a first through hole and a cavity that are connected from top to bottom for penetrating its body. The cavity has a first threaded area. One end of the valve needle passes through the first through hole and extends into the cavity. A locking block has a second threaded area on its side wall. The locking block extends into the cavity and abuts against the valve needle, and at least partially protrudes from the cavity. The locking block is connected to the first threaded area through the second threaded area and fixed to the positioning sleeve. A positioning plate is used to be embedded in a mounting slot on a hot runner seat plate. The positioning plate has a second through hole that penetrates its body, and the valve needle passes through the second through hole.

2. The mold opening depth detection fixture according to claim 1, characterized in that, The valve needle includes a connected end body and a rod body, the end body being located within the cavity, and the rod body passing through the first through hole.

3. The mold opening depth detection fixture according to claim 2, characterized in that, The diameter of the cavity is larger than the diameter of the first through hole, and the end body abuts against the top wall of the cavity.

4. The mold opening depth detection fixture according to claim 2 or 3, characterized in that, The upper part of the cavity sidewall is provided with a first limiting ring for limiting the end body.

5. The mold opening depth detection fixture according to claim 4, characterized in that, The upper end of the locking block is provided with a relief notch in an annular structure.

6. The mold opening depth detection fixture according to claim 1 or 5, characterized in that, The upper end of the locking block has a planar structure.

7. The mold opening depth detection fixture according to claim 4, characterized in that, The lower part of the cavity sidewall is provided with a second limiting ring, and the first screw connection area is located between the first limiting ring and the second limiting ring.

8. The mold opening depth detection fixture according to claim 1, characterized in that, The lower outer wall of the positioning sleeve is provided with a limiting surface.

9. The mold opening depth detection fixture according to claim 1, characterized in that, The positioning plate has a lifting hole located next to the second through hole.

10. The mold opening depth detection fixture according to claim 1, characterized in that, The positioning sleeve, locking block, and positioning disc are made of metal.

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