A straight top rotary ejection mechanism and mold

Abstract

The present invention provides a straight-top rotary ejection mechanism and a mold, belonging to the field of mold technology, comprising: a glue feed channel, one end of which is a gate and the other end is a glue feed port; a straight ejector block, one end of which is located at the glue feed port; a push rod, one end of which is connected to the other end of the straight ejector block; a pulling rod, one end of which is provided with a pulling portion located at the glue feed port and is located below the straight ejector block, and the straight ejector block and the residual material in a solidified state in the glue feed port are cut off by the stroke difference between the push rod and the pulling rod; a rotating rod, one end of which is connected to the gate, wherein a track is provided on the surface of the rotating rod; a guide member, which is installed on the mold, and one end of the guide member cooperates with the track. The present invention can remove the material at the glue feed port by a manipulator, realize automatic material removal, thereby improving work efficiency. In addition, the use of straight-top rotary ejection can save a lot of space inside the mold and improve the utilization rate of the internal space of the mold.

Description

Technical Field

[0001] The invention belongs to the technical field of molds and relates to an ejection mechanism, in particular to a straight ejection rotary ejection mechanism and a mold. Background Art

[0002] In existing injection molding products, in order to ensure the appearance of the product after molding, the product is often injected by the method of bottom injection, so as to improve the appearance of the product after molding. In addition, in order to realize automated production and improve work efficiency, a robot is often used to unload the material and clean the residual material at the inlet. However, since the injection molding product is injected by the method of bottom injection, the residual material at the inlet is "hidden" under the top block, making it impossible for the robot to extend to the bottom of the top block to operate. Therefore, in the prior art, for injection molding products using bottom injection, the residual material at the inlet is generally removed manually, which increases labor intensity on the one hand, and fails to achieve true automation on the other hand, reducing work efficiency. Summary of the invention

[0003] The purpose of the present invention is to address the above-mentioned problems in the prior art and to propose a straight-top rotary ejection mechanism capable of realizing fully automated production.

[0004] The purpose of the present invention can be achieved through the following technical solutions: A straight-top rotary ejection mechanism, comprising:

[0005] A glue inlet channel, one end of which is a gate and the other end is a glue inlet, wherein the glue inlet is located at the bottom of the product molding cavity;

[0006] A plurality of straight ejector blocks, wherein the positions of some of the straight ejector blocks correspond to the positions of the glue inlet channels, and the positions of other straight ejector blocks are staggered with the positions of the glue inlet channels, wherein one end of the straight ejector block corresponding to the position of the glue inlet channels is located at the glue inlet port;

[0007] A plurality of ejector rods correspond to the positions of a plurality of straight ejector blocks one by one, and one end of the ejector rod is connected to the other end of the straight ejector block, and the straight ejector block is driven to move up and down along the demoulding direction of the product by the ejector rod;

[0008] A material pulling rod, one end of which is provided with a material pulling portion, and the material pulling portion is located at the glue inlet and below the straight ejector block, and there is a height difference between the plane where the other end of the material pulling rod is located and the plane where the other end of the ejector rod is located, wherein the moving stroke of the ejector rod is greater than the moving stroke of the material pulling rod, and the residual material in a solidified state in the straight ejector block and the glue inlet is cut off by the stroke difference between the ejector rod and the material pulling rod;

[0009] A rotating material rod, one end of which is connected to the gate, the rotating material rod and the material pulling part of the end are respectively located at the two ends of the glue feeding channel, when the material in the glue feeding channel is solidified, the material in the glue feeding channel is used to realize the connection between the material pulling part and the rotating material rod, wherein the surface of the rotating material rod is provided with a track;

[0010] The guide piece is installed on the mold, and one end of the guide piece cooperates with the track. The cooperation between the guide piece and the track causes the rotating material rod to move in a straight direction, or to move synchronously in a straight direction and a rotation direction, so as to rotate the material pulling part out from under the straight top block.

[0011] In the above-mentioned straight ejection rotary ejection mechanism, the side of the straight ejection block facing the ejector rod is arranged in a stepped shape to form a first step surface and a second step surface, and the first step surface corresponds to the position of the glue inlet, and the second step surface is connected to the ejector rod. When the straight ejection block is driven by the ejector rod to move along the demoulding direction of the product, the first step surface and the solidified material at the glue inlet are automatically cut off, so that the material at the glue inlet will not move synchronously with the straight ejection block.

[0012] In the above-mentioned straight-top rotary ejection mechanism, the pulling part includes a second end face that forms a height difference with the end face on the pulling rod located at one end of the glue inlet, and the second end face is connected to the end face on the pulling rod located at one end of the glue inlet through a pulling surface, wherein the angle between the pulling surface and the second end face is greater than 0° and less than 90°.

[0013] In the above-mentioned straight-top rotary ejection mechanism, there are multiple pulling rods, one end of which is located at the glue inlet, and a pulling portion is provided at the end of the pulling rod, and another end of the pulling rod is located between the glue inlet and the gate; or there are multiple pulling rods, one end of which is located at the glue inlet, and another end of the pulling rod is located between the glue inlet and the gate, wherein a pulling portion is provided at the end of each pulling rod.

[0014] In the above-mentioned straight-top rotary ejection mechanism, the track on the rotating material rod is arranged along the demoulding direction of the product, and the track includes a straight line segment and a spiral segment that are interconnected; or the track on the rotating material rod is arranged along the demoulding direction of the product, and the track includes two straight line segments and a spiral segment that are interconnected, wherein one end of one straight line segment is connected to one end of the spiral segment, and one end of the other straight line segment is connected to the other end of the spiral segment.

[0015] In the above-mentioned straight-top rotary ejection mechanism, the guide member includes:

[0016] The guide block is fixedly mounted on the mold, and the guide block is provided with through holes penetrating both sides of the guide block along the demoulding direction of the product, wherein the rotating material rod is inserted into the through holes;

[0017] At least one ball plunger has one end screwed onto the guide block and the other end inserted into the through hole and abutted against the track on the rotating material rod, wherein when the ball plunger abuts against the straight segment, the pulling rod and the rotating material rod move linearly synchronously; when the ball plunger abuts against the spiral segment, the pulling rod and the rotating material rod move rotationally synchronously.

[0018] In the above-mentioned straight-top rotary ejection mechanism, there are two ball plungers, and the two ball plungers are arranged opposite to each other, wherein the two ball plungers are respectively abutted and matched with the two tracks on the rotating material rod.

[0019] The above-mentioned straight-top rotary ejection mechanism also includes two superimposed top plates, namely an upper top plate and a lower top plate, and one end of the ejector rod is connected to the straight ejector block, and the other end of the ejector rod is connected to the upper top plate, wherein a plurality of delay cavities are arranged on the top plate along the demoulding direction of the product, and a T-shaped delay piece is arranged in each delay cavity, the vertical end of the delay piece is plug-fitted with the lower top plate and connected to the fixed template of the mold, the horizontal end of the delay piece is abutted against the end of the pulling rod or the rotating rod, when the ejector rod pushes the straight ejector block to move along the demoulding direction of the product, the lower top plate and the upper top plate move up synchronously, and after the lower top plate is clamped with the horizontal end of the delay rod, the pulling rod, the rotating rod and the straight ejector block move up synchronously.

[0020] In the above-mentioned direct-pushing and rotating ejection mechanism, a buffer is nested on the pulling rod and the rotating rod, and the buffer is in abutment with the cavity opening of the delay cavity.

[0021] The invention also provides a mould, comprising the straight-top rotary ejection mechanism.

[0022] Compared with the prior art, the present invention has the following beneficial effects:

[0023] (1) The present invention provides a direct top rotary ejection mechanism, which can remove the material at the glue inlet through a manipulator to realize automatic material removal, thereby improving work efficiency. In addition, the direct top rotary ejection can save a lot of space inside the mold and improve the utilization rate of the internal space of the mold;

[0024] (2) The angle between the material pulling surface and the first end surface, or between the material pulling surface and the second end surface, is less than 90°, so that the material pulling surface is set obliquely. When the straight ejector block moves along the demoulding direction of the product under the action of the ejector rod, the material at the glue inlet is blocked by the material pulling surface, so that the material at the glue inlet will not move synchronously with the straight ejector block along the demoulding direction of the product. When the pulling force between the straight ejector block and the material at the glue inlet is greater than the bonding force between the two, the straight ejector block and the material at the glue inlet are broken, so that the material at the glue inlet remains at the glue inlet, providing a basis for the subsequent robot to directly pick up the material at the glue inlet. BRIEF DESCRIPTION OF THE DRAWINGS

[0025] Figure 1 The present invention is a diagram of a straight-top rotary ejection mechanism in use in a mold.

[0026] Figure 2 It is a structural schematic diagram of a straight-top rotary ejection mechanism of the present invention.

[0027] Figure 3 This is a cross-sectional view of a straight top rotary ejection mechanism of the present invention. Figure 1 .

[0028] Figure 4 This is a cross-sectional view of a straight top rotary ejection mechanism of the present invention. Figure 2 .

[0029] Figure 5 It is a schematic structural diagram of a pulling rod in a preferred embodiment of the present invention.

[0030] Figure 6 yes Figure 7 Enlarged view of part A.

[0031] Figure 7 It is a structural schematic diagram of a rotating material rod in a preferred embodiment of the present invention.

[0032] Figure 8 yes Figure 7 Enlarged view of part B.

[0033] Fig. 9 It is a structural schematic diagram of a mold of the present invention.

[0034] Fig.10 It is a partial structural schematic diagram of a mold of the present invention.

[0035] In the figure, 10, glue inlet channel; 11, gate; 12, glue inlet; 20, straight ejector block; 21, first step surface; 22, second step surface; 30, ejector rod; 40, pulling rod; 41, pulling part; 411, first end surface; 412, second end surface; 413, pulling surface; 50, rotating rod; 51, track; 511, straight line segment; 512, spiral segment; 60, guide member; 61, guide block; 611, through hole; 62, ball plunger; 70, ejector plate; 71, upper ejector plate; 72, lower ejector plate; 73, delay cavity; 74, delay member; 75, buffer member; 80, product molding cavity; 90, fixed mold plate. DETAILED DESCRIPTION

[0036] The following are specific embodiments of the present invention and the accompanying drawings to further describe the technical solution of the present invention, but the present invention is not limited to these embodiments.

[0037] It should be noted that all directional indications (such as up, down, left, right, front, back, etc.) in the embodiments of the present invention are only used to explain the relative position relationship, movement status, etc. between the components under a certain specific posture (as shown in the accompanying drawings). If the specific posture changes, the directional indication will also change accordingly.

[0038] like Figures 1 to 10 As shown, the present invention provides a straight-top rotary ejection mechanism, comprising:

[0039] A glue inlet channel 10, one end of which is set as a gate 11, and the other end is connected to the product molding cavity 80 of the mold, and is located at a glue inlet 12 at the bottom of the product molding cavity 80;

[0040] A plurality of straight ejector blocks 20, wherein the positions of some of the straight ejector blocks 20 correspond to the positions of the glue inlet passage 10, and the positions of other straight ejector blocks 20 are staggered with the positions of the glue inlet passage 10, wherein one end of the straight ejector block 20 corresponding to the position of the glue inlet passage 10 is located at the glue inlet port 12;

[0041] A plurality of ejector rods 30 are connected to a plurality of straight ejector blocks 20 in a one-to-one correspondence, and one end of the ejector rod 30 is connected to the other end of the straight ejector block 20, and the ejector rod 30 drives the straight ejector block 20 to move up and down along the demoulding direction of the product;

[0042] A pulling rod 40 is provided with a pulling portion 41 at one end, and the pulling portion 41 is located at the glue inlet 12 and below the straight ejector block 20. There is a height difference between the plane where the other end of the pulling rod 40 is located and the plane where the other end of the ejector pin 30 is located, wherein the moving stroke of the ejector pin 30 is greater than the moving stroke of the pulling rod 40, and the residual material in the solidified state in the straight ejector block 20 and the glue inlet 12 is cut off by the stroke difference between the ejector pin 30 and the pulling rod 40;

[0043] The rotating material rod 50 has one end connected to the gate 11, and the rotating material rod 50 and the material pulling part 41 at this end are respectively located at the two ends of the glue feeding channel 10. When the material in the glue feeding channel 10 is solidified, the material pulling part 41 and the rotating material rod 50 are connected through the material in the glue feeding channel 10, and the surface of the rotating material rod 50 is provided with a track 51, wherein the moving stroke of the rotating material rod 50 is consistent with the moving stroke of the material pulling rod 40;

[0044] The guide member 60 is installed on the mold, and one end of the guide member 60 cooperates with the track 51. The cooperation between the guide member 60 and the track 51 causes the rotating material rod 50 to move in a linear direction, or move in a linear and rotational direction simultaneously, so as to rotate the pulling part 41 out from under the straight top block 20.

[0045] It is worth mentioning that the working principle of the straight ejection rotary ejection mechanism provided by the present invention is that the material first enters from the gate 11, passes through the glue inlet channel 10, and then enters the mold cavity from the glue inlet 12. After the material is solidified, the ejector rod 30 drives the straight ejector block 20 to move along the demoulding direction of the product. Since the moving stroke of the pulling rod 40 and the rotating rod 50 are the same, and the moving stroke of the pulling rod 40 is smaller than the moving stroke of the ejector rod 30, when the ejector rod 30 drives the straight ejector block 20 to move, the pulling rod 40 and the rotating rod remain stationary, and the pulling portion 41 is used to cause the straight ejector block 20 to cut off the solidified material at the glue inlet 12 during the upward movement, and then As the straight ejector block 20 moves, the stroke difference between the ejector rod 30 and the material pulling rod 40 is continuously reduced. When the stroke difference between the two is zero, the straight ejector block 20, the material pulling rod 40 and the rotating material rod 50 move synchronously. Through the cooperation between the guide member 60 and the track 51, the rotating material rod 50 is accompanied by rotation during the linear movement. Since the material pulling rod 40 and the rotating material rod 50 are connected through the material in the glue feed channel 10, the rotating material rod 50 drives the material pulling rod 40 to rotate synchronously during the rotation process, thereby rotating the material pulling part 41 on the material pulling rod 40 out from the bottom of the straight ejector block 20. At this time, the robot can directly remove the residual material at the glue feed port 12.

[0046] The present invention provides a straight-top rotary ejection mechanism, which can remove the material at the glue inlet 12 through a robot arm to realize automatic material removal, thereby improving work efficiency. In addition, the use of straight-top rotary ejection can save a lot of space inside the mold and improve the utilization rate of the internal space of the mold.

[0047] Preferably, one side of the straight ejector block 20 tends to be flat and flush with the bottom of the cavity, and the other side of the straight ejector block 20 is arranged in a stepped shape to form a first step surface 21 and a second step surface 22, and the first step surface 21 corresponds to the position of the glue inlet 12, and the second step surface 22 is connected to the ejector rod 30. When the straight ejector block 20 is driven by the ejector rod 30 to move along the demolding direction of the product, the first step surface 21 and the solidified material at the glue inlet 12 are automatically cut off, so that the material at the glue inlet 12 will not move synchronously with the straight ejector block 20.

[0048] Preferably, the pulling portion 41 is arranged in a Z shape, and includes a first end face 411 and a second end face 412, and a pulling surface 413 connecting the first end face 411 and the second end face 412, wherein the first end face 411 is the end face of the pulling rod 40 located at the end where the glue inlet 12 is located, and a height difference is formed between the first end face 411 and the second end face 412, and the angle between the pulling surface 413 and the first end face 411 or the second end face 412 is greater than 0° and less than 90°.

[0049] In this embodiment, the angle between the pulling surface 413 and the first end surface 411, or the angle between the pulling surface 413 and the second end surface 412 is less than 90°, so that the pulling surface 413 is set obliquely. When the straight ejector block 20 moves along the demoulding direction of the product under the action of the ejector rod 30, the material at the glue inlet 12 is blocked by the pulling surface 413, so that the material at the glue inlet 12 will not move synchronously with the straight ejector block 20 along the demoulding direction of the product. When the pulling force between the straight ejector block 20 and the material at the glue inlet 12 is greater than the bonding force between the two, the straight ejector block 20 and the material at the glue inlet 12 are broken, so that the material at the glue inlet 12 remains at the glue inlet 12, providing a basis for the subsequent robot to directly take the material at the glue inlet 12.

[0050] It is worth mentioning that the shape of the material pulling portion 41 is not limited to the Z-shape, but can also be other shapes, as long as the shape can provide a reverse pulling force when the straight ejector block 20 moves along the demoulding direction, so that the material in the glue inlet 12 will not move synchronously with the straight ejector block 20 along the demoulding direction, thereby achieving the break between the material in the glue inlet 12 and the straight ejector block 20. For example, when the number of the material pulling surfaces 413 is two, and they are arranged in an eight-shaped shape, the material pulling portion 41 is formed.

[0051] Preferably, in order to improve the pulling effect between the material and the pulling rod 40, one method is to increase the number of pulling rods 40, and another method is to set a pulling portion 41 at one end of the rotating material rod 50 located at the gate 11. If the first method is adopted, that is, increasing the number of pulling rods 40, and one end of the added pulling rod 40 is connected to the glue feed channel 10 and is located between the gate 11 and the glue feed port 12, the pulling portion 41 can also be set at the end of the added pulling rod 40 that is connected to the glue feed channel 10, or the pulling portion 41 can not be set.

[0052] It is worth mentioning that one end of the added pulling rod 40 connected to the glue feeding channel 10 is located outside the straight ejector block 20 .

[0053] Preferably, the track 51 on the rotating material rod 50 is arranged along the axial direction of the rotating material rod 50, and the track 51 includes a straight segment 511 and a spiral segment 512 that are connected to each other, wherein, when the straight top block 20 rises a distance under the action of the top rod 30, the distance is generally 20 mm, the straight top block 20, the pulling rod 40 and the rotating material rod 50 move up a distance synchronously, and at this time, the end of the guide member 60 that cooperates with the track 51 moves on the straight segment 511, the distance of which is 35 mm, and the distance does not exceed the straight segment 511 on the track 51. 1 distance, and then the straight ejector block 20, the pulling rod 40 and the rotating rod 50 continue to rise. At this time, the end of the guide member 60 that cooperates with the track 51 moves to the spiral segment 512, and the distance of this segment is 30mm, which is the distance of the entire spiral segment 512. When the end of the guide member 60 that cooperates with the track 51 moves to the tail end of the spiral segment 512, the material originally located on the glue inlet 12 below the straight ejector block 20 has been transferred out from under the straight ejector block 20 and is offset from the straight ejector block 20. At this time, the robot can remove the material at the glue inlet 12.

[0054] It is worth mentioning that the reason for setting the straight line segment 511 is that the original glue inlet 12 is located at the bottom of the product molding cavity 80. Only when the material at the glue inlet 12 is separated from the product molding cavity 80 and is located above the bottom of the product molding cavity 80, can the material at the glue inlet 12 be able to rotate with the pulling rod 40 under the action of the rotating rod 50, and rotate out from the bottom of the straight top block 20, so as to facilitate the robot to take the material.

[0055] Further preferably, there are two straight line segments 511, which are respectively located at the two ends of the spiral segment 512, wherein one end of one straight line segment 511 is connected to the head end of the spiral segment 512, and one end of the other straight line segment 511 is connected to the tail end of the spiral segment 512, wherein the second straight line segment 511 is provided, at this time, the maximum ejection stroke of the mold can be reached, which is convenient for calculating the stroke of the entire ejection mechanism.

[0056] Preferably, the guide member 60 includes a guide block 61, which is installed on the mold, and the guide block 61 is provided with through holes 611 penetrating both sides of the guide block 61 along the demoulding direction of the product, wherein the rotating material rod 50 is inserted into the through holes 611;

[0057] At least one ball plunger 62 has one end screwed onto the guide block 61 and the other end inserted into the through hole 611 and abutted against the track 51 on the rotating material rod 50. When the rotating material rod 50 moves along the demoulding direction of the product, the ball plunger 62 moves with the track 51, thereby realizing the linear movement and rotation of the rotating material rod 50.

[0058] It is worth mentioning that the ball plunger 62 is a prior art and thus will not be described in detail here.

[0059] Further preferably, the number of the ball plungers 62 may be two, and the two ball plungers 62 are arranged opposite to each other, wherein when the number of the ball plungers 62 is two, the number of the tracks 51 on the rotating material rod 50 is synchronously two.

[0060] Preferably, it also includes two superimposed top plates 70, namely an upper top plate 71 and a lower top plate 72, and one end of the top rod 30 is connected to the straight top block 20, and the other end of the top rod 30 is connected to the upper top plate 71, wherein a plurality of delay cavities 73 are arranged on the top plate 70 along the demoulding direction of the product, and a T-shaped delay piece 74 is arranged in each delay cavity 73, the vertical end of the delay piece 74 is plug-fitted with the lower top plate 72 and connected to the fixed template 90 of the mold, the horizontal end of the delay piece 74 is abutted against the end of the pulling rod 40 or the rotating rod 50, when the top rod 30 pushes the straight top block 20 to move along the demoulding direction of the product, the lower top plate 72 and the upper top plate 71 move up synchronously, and when the lower top plate 72 forms a clamping connection with the horizontal end of the delay rod, the pulling rod 40, the rotating rod 50 and the straight top block 20 move up synchronously.

[0061] Further preferably, a buffer member 75 is nested on the pulling rod 40 and the rotating rod 50 , and the buffer member 75 is in abutment with the cavity opening of the delay cavity 73 to serve as a buffer structure when the ejection mechanism is reset.

[0062] It should be noted that in the present invention, descriptions such as "first", "second", "one", etc. are only used for descriptive purposes and cannot be understood as indicating or implying their relative importance or implicitly indicating the number of technical features indicated. Therefore, the features defined as "first" and "second" may explicitly or implicitly include at least one of the features. In the description of the present invention, the meaning of "multiple" is at least two, such as two, three, etc., unless otherwise clearly and specifically defined. The terms "connected", "fixed", etc. should be understood in a broad sense. For example, "fixed" can be a fixed connection, a detachable connection, or an integral whole; it can be a mechanical connection or an electrical connection; it can be directly connected or indirectly connected through an intermediate medium, it can be the internal connection of two elements or the interaction relationship between two elements, unless otherwise clearly defined. For ordinary technicians in this field, the specific meanings of the above terms in the present invention can be understood according to the specific circumstances.

[0063] In addition, the technical solutions between the various embodiments of the present invention can be combined with each other, but it must be based on the fact that ordinary technicians in the field can implement it. When the combination of technical solutions is contradictory or cannot be implemented, it should be deemed that such combination of technical solutions does not exist and is not within the scope of protection required by the present invention.

[0064] The specific embodiments described herein are merely examples of the spirit of the present invention. Those skilled in the art may make various modifications or additions to the specific embodiments described or replace them in similar ways, but they will not deviate from the spirit of the present invention or exceed the scope defined by the appended claims.

Claims

1. A straight top rotary ejection mechanism, characterized in that: include: A glue inlet channel, one end of which is a gate and the other end is a glue inlet, wherein the glue inlet is located at the bottom of the product molding cavity; A plurality of straight ejector blocks, wherein the positions of some of the straight ejector blocks correspond to the positions of the glue inlet channels, and the positions of other straight ejector blocks are staggered with the positions of the glue inlet channels, wherein one end of the straight ejector block corresponding to the position of the glue inlet channels is located at the glue inlet port; A plurality of ejector rods correspond to the positions of a plurality of straight ejector blocks one by one, and one end of the ejector rod is connected to the other end of the straight ejector block, and the straight ejector block is driven to move up and down along the demoulding direction of the product by the ejector rod; A material pulling rod, one end of which is provided with a material pulling portion, and the material pulling portion is located at the glue inlet and below the straight ejector block, and there is a height difference between the plane where the other end of the material pulling rod is located and the plane where the other end of the ejector rod is located, wherein the moving stroke of the ejector rod is greater than the moving stroke of the material pulling rod, and the residual material in a solidified state in the straight ejector block and the glue inlet is cut off by the stroke difference between the ejector rod and the material pulling rod; A rotating material rod, one end of which is connected to the gate, the rotating material rod and the material pulling part of the end are respectively located at the two ends of the glue feeding channel, when the material in the glue feeding channel is solidified, the material in the glue feeding channel is used to realize the connection between the material pulling part and the rotating material rod, wherein the surface of the rotating material rod is provided with a track; The track on the rotating material rod is arranged along the demoulding direction of the product, and the track includes a straight line segment and a spiral segment that are interconnected; or the track on the rotating material rod is arranged along the demoulding direction of the product, and the track includes two straight line segments and a spiral segment that are interconnected, one end of one straight line segment is connected to one end of the spiral segment, and one end of the other straight line segment is connected to the other end of the spiral segment; The guide piece is installed on the mold, and one end of the guide piece is matched with the track. The matching between the guide piece and the track causes the rotating material rod to move synchronously along the straight and rotating directions, so that the pulling part is turned out from under the straight top block; The guides include: The guide block is fixedly mounted on the mold, and the guide block is provided with through holes penetrating both sides of the guide block along the demoulding direction of the product, wherein the rotating material rod is inserted into the through holes; At least one ball plunger has one end screwed onto the guide block and the other end inserted into the through hole and abutted against the track on the rotating material rod, wherein when the ball plunger abuts against the straight segment, the pulling rod and the rotating material rod move linearly synchronously; when the ball plunger abuts against the spiral segment, the pulling rod and the rotating material rod move rotationally synchronously.

2. The straight-top rotary ejection mechanism according to claim 1, characterized in that: The side of the straight ejector block facing the ejector rod is arranged in a stepped shape to form a first step surface and a second step surface, and the first step surface corresponds to the position of the glue inlet, and the second step surface is connected to the ejector rod. When the straight ejector block is driven by the ejector rod to move along the demoulding direction of the product, the first step surface and the solidified material at the glue inlet are automatically cut off, so that the material at the glue inlet will not move synchronously with the straight ejector block.

3. The straight-top rotary ejection mechanism according to claim 1, characterized in that: The pulling portion includes a second end face that forms a height difference with the end face on the pulling rod located at one end of the glue inlet, and the second end face is connected to the end face on the pulling rod located at one end of the glue inlet through a pulling surface, wherein the angle between the pulling surface and the second end face is greater than 0° and less than 90°.

4. The straight-top rotary ejection mechanism according to claim 1, characterized in that: There are multiple pulling rods, one end of one of the pulling rods is located at the glue inlet, and a pulling part is provided at the end of the pulling rod, and another end of the pulling rod is located between the glue inlet and the gate; or there are multiple pulling rods, one end of one of the pulling rods is located at the glue inlet, and another end of the pulling rod is located between the glue inlet and the gate, wherein a pulling part is provided at the end of each pulling rod.

5. The straight-top rotary ejection mechanism according to claim 1, characterized in that: There are two ball head plungers, and the two ball head plungers are arranged opposite to each other, wherein the two ball head plungers are respectively abutted and matched with the two tracks on the rotating material rod.

6. The straight-top rotary ejection mechanism according to claim 1, characterized in that: It also includes two superimposed top plates, namely an upper top plate and a lower top plate, and one end of the top rod is connected to the straight top block, and the other end of the top rod is connected to the upper top plate, wherein a plurality of delay cavities are arranged on the top plate along the demoulding direction of the product, and a T-shaped delay piece is arranged in each delay cavity, the vertical end of the delay piece is plug-fitted with the lower top plate and connected to the fixed template of the mold, the horizontal end of the delay piece is abutted against the end of the pulling rod or the rotating rod, when the top rod pushes the straight top block to move along the demoulding direction of the product, the lower top plate and the upper top plate move up synchronously, and after the lower top plate is clamped with the horizontal end of the delay rod, the pulling rod, the rotating rod and the straight top block move up synchronously.

7. The straight-top rotary ejection mechanism according to claim 6, characterized in that: A buffer is nested on the pulling rod and the rotating rod, and the buffer is in abutment with the cavity opening of the delay cavity.

8. A mold, characterized in that: It comprises the straight-top rotary ejection mechanism as described in any one of claims 1 to 7.

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