CN113635524B - An injection mold rack inclined top mechanism - Google Patents

Abstract

The invention discloses an injection mold rack inclined ejection mechanism which is characterized by comprising a guide block, an inclined ejector rod and a straight ejector rod, wherein the guide block is fixedly arranged; the guide block is internally provided with a sliding channel matched with an inclined ejector rod and a straight ejector rod, the inclined ejector rod is provided with an inclined ejector head, a compression spring is arranged inside the inclined ejector head, the inclined ejector head is in sliding connection with the inclined ejector rod, two ends of the compression spring are respectively abutted against the inclined ejector head and the inclined ejector rod to move upwards, and the inclined ejector head and the side surface of the inclined ejector rod are provided with matched latch structures. The invention has the advantages that the lifting control of the inclined ejector rod is completed through the lifting of the straight ejector rod, the lifting control of the inclined ejector rod can be realized through the arrangement of the compression spring between the inclined ejector head and the inclined ejector rod, the clamping tooth structure can shake when the inclined ejector rod is ejected out of a mold, so that the ejection efficiency of the inclined ejector rod can be improved, the straight ejector rod and the inclined ejector rod are limited mutually, the ejection stability of the inclined ejector rod can be improved, and the ejection efficiency is high.

Description

An injection mold rack inclined top mechanism

technical field

The present application relates to the technical field of mold lifter mechanisms, and in particular, to a rack lifter mechanism of an injection mold.

Background technique

At present, due to the limitation of some products, when the mold is demolded, the demoulding distance and angle of the inclined ejector need to be very large; the theoretical angle of the traditional inclined ejector does not exceed 13°, and it needs to exceed 13°. Increase the inclined roof auxiliary rod. In the case of a lifter auxiliary rod, the limit cannot exceed 20 degrees. The lifter auxiliary rod occupies a lot of mold space, and the mold is easily damaged during mass production, the inclined lifter is broken, and the ejection is not smooth. Abnormal noise will seriously affect mass production or even impossible to mass production, and maintenance will take a long time, delaying the mass production of products.

For example, in the Chinese patent literature, the patent number CN2014205847490 is a utility model patent issued on April 1, 2015. The application discloses a mold with a lifter mechanism, including an upper template, a lower template, and a lower template located in the lower template. The top plate below and the bottom plate located below the top plate, the top plate is provided with a sloping roof seat, the sloping roof seat is slidably provided with a sliding guide plate, the sliding guide plate is provided with a sloping top rod, the The inclined top rod penetrates into the lower template obliquely upward, the upper end of the inclined top rod is provided with a inclined top block, and the sliding guide plate is provided with an auxiliary rod, and the auxiliary rod is parallel to the inclined top rod, The auxiliary rod penetrates into the lower template obliquely upward, and the auxiliary rod penetrates into the bottom plate obliquely downward.

The disadvantage of the prior art is that the inclined roof and its components occupy a large space and are inconvenient to maintain.

SUMMARY OF THE INVENTION

Based on the above deficiencies in the prior art, the present invention provides an injection mold rack lifter mechanism, which can improve the lifter ejection stability, facilitate the lifter mechanism's pushout, and improve the lifter lifter's ejection efficiency.

In order to achieve the above purpose of the invention, the present invention adopts the following technical solutions.

An injection mold rack lifter mechanism is characterized in that it includes a fixed guide block, and also includes a sloped lifter and a straight lifter arranged in an intersecting state, and the inclined lifter and the straight lifter are provided with matching lines; The block is provided with a sliding channel matching the oblique ejector rod and the straight ejector rod. The oblique ejector rod is provided with an oblique ejector head, and a compression spring is arranged inside the oblique ejector head. The oblique ejector head and the oblique ejector rod are slidably connected. Abutting against the inclined jack and the inclined jack and ascending, the inside of the inclined jack and the side surface of the inclined jack are provided with a matching tooth structure.

In the present application, the lifting control of the oblique ejector rod is accomplished through the lifting of the straight ejector rod, and the lifting control of the oblique ejector head can be realized by the setting of the compression spring between the oblique ejector head and the oblique ejector rod. The cooperation will shake, so that the ejection efficiency of the inclined top can be improved, and the straight ejector rod and the inclined ejector rod can limit each other, which can improve the stability of the ejection of the inclined top, and the ejection efficiency is high.

Preferably, the matching pattern adopts the tooth pattern arranged perpendicular to the axis of the straight ejector rod. The meshing and synchronous transmission of the straight ejector rod and the inclined ejector rod is realized through the tooth pattern, and the ejection of the inclined ejector rod is stable.

Preferably, the sliding channel includes a first channel that matches the inclined ejector rod and a second channel that matches the straight ejector bar, the first channel and the second channel intersect and communicate with each other, and the ends of the first channel and the second channel are respectively provided with transition circles arc. The first channel and the second channel can limit the position of the inclined ejector rod and the straight ejector rod, and ensure the stability of the lift of the inclined ejector rod and the straight ejector rod. Sliding for improved sliding stability.

Preferably, the lifter mechanism also includes a limit block that is relatively fixed to the guide block, the matching pattern includes a thread on the upper section of the straight lift rod and a helical tooth on the lifter rod, the lower section of the straight lift rod is provided with a transmission thread, and the limit block There is a transmission hole matched with the transmission thread. Driving the helical teeth through the thread can not only achieve a stable transmission effect like a rack, but also realize the lifting and rotation of the straight ejector rod through the setting of the transmission thread, so that the ejector rod can be further driven by the thread while the straight ejector rod is raised and lowered. Extending out, thereby improving the ejection efficiency of the lifter, compared with the rack structure, the actual required length of the straight ejector rod can be reduced, thereby reducing the space occupied by the straight ejector rod and improving the stability in the radial direction.

Preferably, the lower end of the straight ejector sticks out to the outside of the lower end of the limiting block. The straight ejector rod can be directly driven at the lower end of the limit block, and the ejection is convenient.

Preferably, there are two inclined ejector rods, the upper and lower clearances of the two inclined ejector rods are arranged, the two inclined ejector rods are arranged on the same side of the straight ejector rod, and the helical teeth on the two inclined ejector rods are arranged in parallel; The two ends of the rod are respectively integrally connected, and the height of the helical teeth of the oblique ejector rod located on the lower side is greater than that of the oblique ejector rod located on the upper side. By arranging the two oblique ejector rods side by side in parallel, a double lock can be formed, thereby improving the stability of the cooperation between the oblique ejector rod and the straight ejector rod; The matching of the ejector bars is tighter and the transmission is more reliable. When the straight ejector bar is screwed up and down, the lower oblique ejector bar will give feedback before the upper oblique ejector bar, which will squeeze the gap between the two oblique ejector bars, so that the two An inwardly curved arc is formed between the inclined top rods, so that the sliding of the inclined top rods in the sliding channel is more convenient, and the efficiency and stability of the inclined top rods are improved.

Preferably, the height difference of the helical teeth on the two inclined ejector rods is between 0.1 and 2 mm. While ensuring the stability of the synchronous transmission of the two inclined ejector rods, it is also ensured that the two inclined ejector rods have a certain differential margin.

Preferably, the straight ejector rod is provided with a connecting ring with a convex arrangement, the transmission thread is arranged on the wall surface of the connection ring, the transmission hole is provided with a matching thread for the transmission thread, the upper end of the transmission hole is provided with a sealing ring, and the sealing ring is provided with a sealing ring. The inner diameter mates with the outer diameter of the straight ejector. The transmission thread is provided by the transmission ring, which can not only ensure the screw lifting effect of the straight ejector, but also prevent the interference between the threaded straight ejector and the transmission hole, so as to ensure the reliability of the movement of the straight ejector; the sealing ring forms a limit to prevent Excessive movement of the straight top rod ensures the reliability of the lifter mechanism.

The invention has the following beneficial effects: the ejection efficiency of the inclined top can be improved, the straight ejector rod and the inclined ejector rod are mutually limited, the stability of the ejection of the inclined top can be improved, the ejection efficiency is high, and the movement of the inclined top has good stability.

Description of drawings

FIG. 1 is a schematic structural diagram of the first embodiment of the invention.

FIG. 2 is a schematic structural diagram of Embodiment 1 when the inclined top is ejected.

FIG. 3 is a schematic diagram of the internal structure of the guide block in Embodiment 1. FIG.

FIG. 4 is a schematic structural diagram of the cooperation of the inclined jack and the inclined jack in the present invention.

FIG. 5 is a schematic structural diagram of a second embodiment of the present invention.

FIG. 6 is a schematic structural diagram of a third embodiment of the present invention.

In the figure: guide block 1 inclined top rod 2 straight top rod 3 tooth pattern 4 first channel 5 second channel 6 inclined head 7 compression spring 8 tooth structure 9 boss 10 inclined top hole 11 installation section 12 step part 13 thread section 14 snap ring 15 limit block 16 helical tooth 17 transmission thread 18 connecting ring 19 transmission hole 20 matching thread 21 sealing ring 22 clearance 23.

Detailed ways

The present invention will be further described below with reference to the accompanying drawings and specific embodiments.

Example 1,

As shown in Figures 1 and 2, an injection mold rack lifter mechanism is characterized in that it includes a fixed guide block 1, and also includes a lifter rod 2 and a straight lifter rod 3 that are arranged in an intersecting state. The rod 2 and the straight ejector rod 3 are provided with matching lines; The guide block 1 is provided with a sliding channel matching the inclined top rod 2 and the straight top rod 3. The sliding channel includes a first channel 5 matching the inclined top rod 2 and a second channel 6 matching the straight top rod 3. The first channel 5 Intersecting and communicating with the second channel 6, the ends of the first channel 5 and the second channel 6 are respectively provided with transition arcs. It can be seen from FIG. 3 that the cross sections of the first channel 5 and the second channel 6 are both rectangular parallelepipeds, so the oblique ejector bar 2 and the straight ejector bar 3 are both matched elongated structures. The actual oblique ejector bar 2 and the straight ejector bar 3 The cross section can also be set to a fan shape, a semi-circle or other shapes, as long as the plane where the tooth pattern 4 is located can be reserved, which will not be described in detail in this application. The upper end of the oblique ejector rod 2 is provided with an oblique ejector head 7, and a compression spring 8 is arranged inside the oblique ejector head 7. The oblique ejector head 7 and the oblique ejector rod 2 are slidably connected, and both ends of the compression spring 8 abut the oblique ejector head 7 and the oblique ejector rod respectively. 2. Going up, the inside of the inclined jack 7 and the side surface of the inclined jack 2 are provided with a matching tooth structure 9. Bosses 10 are provided on both the inclined top head 7 and the inclined top rod 2 for fixing the limit compression spring 8 . The lifter head 7 is provided with a lifter hole 11 which is matched with the lifter rod 2. The lifter rod 2 includes an installation section 12 arranged at the upper end of the lifter hole 11. The boss 10 is arranged on the installation section 12. The lifter rod 2 also includes The stepped portion 13 is threadedly connected to the mounting section 12, and the stepped portion 13 is cylindrical. The lower end of the inclined top hole 11 is provided with a threaded section 14, through which a snap ring 15 is threadedly connected. The snap ring 15 is used to limit the end face of the connection between the mounting section 12 and the stepped portion 13. During assembly, a compression spring is pre-installed 8 and the installation section 12 into the lifter hole 11, then screw into the snap ring 15, and then screw the lifter rod 2 and the installation section 12 to complete the assembly of the lifter head 7 and the lifter rod 2. As can be seen from FIG. 4 , four segments of clamping teeth are arranged in the lifter hole 11 , a circle of concave clamping grooves is arranged at the upper end of the installation segment 12 , and the installation segment 12 and the lifter hole 11 are matched with the gap 23 , so that the The jumping fit of the card teeth and the card slot.

In the present application, the lifting control of the oblique ejector rod 2 is completed by the lifting of the straight ejector rod 3, and the lifting control of the oblique ejector head 7 can be realized through the setting of the compression spring 8 between the oblique ejector head 7 and the oblique ejector rod 2. When the mold is formed, the clamping teeth structure 9 will shake when matched, thereby improving the ejection efficiency of the lifter. The straight ejector rod 3 and the lifter pin 2 are mutually limited, which can improve the stability of the lifter ejection, and the ejection efficiency is high.

Example 2,

A rack lift mechanism of an injection mold, as shown in Figure 5, the difference between Embodiment 2 and Embodiment 1 is that the lifter mechanism also includes a limit block 16 fixed relative to the guide block 1, a straight top rod The shape of 3 is cylindrical, and the inclined top rod 2 adopts a long strip structure with a rectangular cross-sectional shape. The guide block 1 also needs to be adaptively designed according to the shapes of the straight ejector rod 3 and the inclined ejector rod 2 . The matching pattern includes the thread on the upper section of the straight ejector rod 3 and the helical teeth 17 on the oblique ejector rod 2. The lower section of the straight ejector rod 3 is provided with a transmission thread 18, and the straight ejector rod 3 is provided with a connecting ring 19 set outwardly. 18 is arranged on the wall surface of the connecting ring 19 , and the upper part of the connecting ring 19 is the upper section of the straight ejector rod 3 . The limiting block 16 is provided with a transmission hole 20 which is matched with the transmission thread 18 . The transmission hole 20 is provided with a matching thread 21 matching the transmission thread 18, the upper end of the transmission hole 20 is provided with a sealing ring 22, and the lower end of the transmission hole 20 is also provided with a sealing ring 22. The inner diameter of the sealing ring 22 and the diameter of the straight ejector rod 3 Cooperate. The lower end of the slider protrudes to the outside of the lower end of the limiting block 16 .

The helical teeth 17 are driven by the thread, which can not only achieve a stable transmission effect like a rack, but also realize the lifting and rotation of the straight ejector rod 3 through the setting of the transmission thread 18, so that the straight ejector rod 3 can be lifted and lowered through the thread at the same time. The ejector rod is further driven to extend, thereby improving the ejection efficiency of the inclined roof. Compared with the rack structure, the actual required length of the straight ejector rod 3 can be reduced, thereby reducing the space occupied by the straight ejector rod 3 and improving the stability in the radial direction. sex.

Example 3,

A rack lift mechanism of an injection mold, as shown in FIG. 6, the difference between Embodiment 3 and Embodiment 2 is that there are two inclined lift rods 2, and the upper and lower gaps 23 of the two inclined lift rods 2 are provided, that is, A gap 23 is provided between the two inclined ejector rods 2 . The two inclined top rods 2 are arranged on the same side of the straight top rod 3, and the helical teeth 17 on the two inclined top rods 2 are arranged in parallel; The height of the helical teeth 17 of 2 is greater than the height of the helical teeth 17 of the oblique ejector rod 2 located on the upper side; the height difference of the helical teeth 17 on the two oblique ejector rods 2 is 1 mm.

By arranging the two oblique ejector rods 2 side by side in parallel, a double lock can be formed, thereby improving the stability of the cooperation between the oblique ejector rod 2 and the straight ejector rod 3; The cooperation between the ejector bar 2 and the straight ejector bar 3 is tighter, and the transmission is more reliable. When the straight ejector bar 3 is screwed up and down, the lower oblique ejector bar 2 gives feedback before the upper oblique ejector bar 2, which will squeeze the two ejector bars. The gap 23 between the rods 2 forms an inwardly curved arc between the two lifter rods 2 , thereby facilitating the sliding of the lifter rod 2 in the sliding channel and improving the efficiency and stability of the lifter when the lifter is ejected.

Claims (6)

1. An injection mold rack inclined ejection mechanism is characterized by comprising a guide block which is fixedly arranged, an inclined ejection rod and a straight ejection rod which are arranged in an intersecting state, wherein the inclined ejection rod and the straight ejection rod are provided with matching grains; the inclined ejector mechanism also comprises a limiting block which is relatively fixedly arranged with the guide block, matched lines comprise threads at the upper section of the straight ejector rod and inclined teeth on the inclined ejector rod, transmission threads are arranged at the lower section of the straight ejector rod, transmission holes matched with the transmission threads are arranged in the limiting block, the two inclined ejector rods are arranged at the upper and lower gaps of the two inclined ejector rods, the two inclined ejector rods are arranged at the same side of the straight ejector rod, and the inclined teeth on the two inclined ejector rods are arranged in parallel; two ends of the two oblique ejector rods are respectively and integrally connected, and the height of the oblique teeth of the oblique ejector rod positioned on the lower side is greater than that of the oblique teeth of the oblique ejector rod positioned on the upper side.

2. The injection mold rack lifter mechanism according to claim 1, wherein the mating pattern is a tooth pattern arranged perpendicular to an axis of the straight ejector rod.

3. The injection mold rack lifter mechanism according to claim 1, wherein the sliding channel comprises a first channel for matching with the lifter and a second channel for matching with the straight lifter, the first channel and the second channel are communicated with each other in an intersecting manner, and the end parts of the first channel and the second channel are respectively provided with a transition arc.

4. The injection mold rack lifter mechanism according to claim 1, wherein a lower end of the straight ejector rod extends outside a lower end of the stopper.

5. The injection mold rack lifter mechanism of claim 1 wherein the difference in height between the helical teeth on the two lifter bars is between 0.1 and 2 mm.

6. The injection mold rack lifter mechanism according to claim 1 or 4, wherein the straight ejector rod is provided with a connecting ring protruding outwards, the transmission thread is arranged on the wall surface of the connecting ring, the transmission hole is internally provided with a matching thread matching with the transmission thread, the upper end of the transmission hole is provided with a sealing ring, and the inner diameter of the sealing ring is matched with the outer diameter of the straight ejector rod.

Images