Worm mold

Abstract

The worm mold comprises a mold plate mechanism and a rotating mechanism, the mold plate mechanism comprises a first mold core and a second mold core, and the first mold core and the second mold core form a worm cavity; the rotating mechanism comprises a driving part and a transmission assembly, the driving part is connected with the transmission assembly, the transmission assembly is connected with the second mold core, and the driving part is used for driving the second mold core to move in the direction away from the first mold core in the axial direction; the transmission assembly comprises a rack and a gear set, one end of the rack is connected with the driving piece, the other end of the rack is in transmission connection with the gear set, and the gear set is rotationally connected with the second mold core. The worm mold provided by the utility model comprises the rotating mechanism, the rotating mechanism drives the second mold core to rotate and demold, burrs are prevented from being left on the spiral surface of the worm during mold stripping, so that a joint line cannot be generated on the spiral surface of the worm after mold stripping, and the worm is relatively small in meshing friction, relatively low in working noise and relatively good in wear resistance during use.

Description

Technical Field

[0001] The present application relates to the technical field of worm molds, and in particular to a worm mold. Background Art

[0002] In automotive engine turbochargers, electronic actuators are often used to control the turbocharger. These actuators achieve control objectives by programming a motor driver and using sensors to provide feedback on the actuator's output position. An electronic actuator typically consists of a plastic housing, an aluminum housing, a motor, a worm, a helical gear assembly, magnets, and a circuit board. The plastic and aluminum housings are connected to form a mounting cavity, within which the helical gear assembly, magnets, and circuit board are located. The worm is connected to the motor, which meshes with the helical gear assembly. The motor drives the helical gear assembly through the worm. The magnet is located at the end of the helical gear assembly's output crankshaft, which drives an external connecting rod to actuate the nozzle ring or bypass valve, thereby adjusting the turbocharger's flow characteristics. The circuit board detects rotational position based on the magnet's rotation, and the magnet cooperates with the sensor to provide position angle feedback.

[0003] Among them, when manufacturing the worm of the electronic actuator in the prior art, the worm injection molding worm mold mostly adopts a closing mold method. The closing mold method is to separate the two or four petals of the mold core on the working surface of the product worm spiral. Therefore, a burr will be left on the working surface of the worm spiral, that is, a closing mold line will be generated. As the worm mold is used for a longer time, the worm mold will be seriously worn, and the burr volume will become larger and larger, that is, the closing mold line will become larger and larger, resulting in the transmission system generating heat due to meshing friction during operation, the noise becomes louder, the wear resistance becomes worse, and the service life is reduced.

[0004] Therefore, the worm injection molding worm mold in the prior art electronic actuator has further room for improvement. Utility Model Content

[0005] In view of this, in order to solve the technical problem that the worm in the electronic actuator in the above-mentioned prior art adopts a clamping structure during injection molding, and the product has a relatively obvious clamping line after injection molding, which leads to a large running noise after the worm is assembled, the present application provides a worm mold, which adopts a rotary demolding structure, and will not produce a large clamping line during injection molding, and can ensure that no burr is left on the spiral working surface of the worm, thereby ensuring that the worm after demolding has less meshing friction during use, lower working noise, and better wear resistance.

[0006] The present application provides a worm mold, comprising a template mechanism and a rotating mechanism, wherein the template mechanism comprises a first mold core and a second mold core, wherein the first mold core and the second mold core form a worm cavity;

[0007] The rotating mechanism includes a driving member and a transmission assembly, wherein the driving member is connected to the transmission assembly, and the transmission assembly is connected to the second mold core, and the driving member is used to drive the second mold core to move axially in a direction away from the first mold core;

[0008] Wherein, the transmission assembly includes a rack and a gear set, one end of the rack is connected to the driving member, and the other end is transmission-connected to the gear set, and the gear set is rotationally connected to the second mold core.

[0009] Compared with the prior art, the present application provides a worm mold, which includes a template mechanism and a rotating mechanism, wherein the template mechanism includes a first mold core and a second mold core, the first mold core and the second mold core form a worm cavity, and the worm is formed by injection molding in the cavity, and the rotating mechanism includes a driving part and a transmission assembly, the transmission assembly includes a rack and a gear set, the rack is meshed with the gear set, the rack linearly displaces to drive the gear assembly to rotate, the gear set is rotationally connected to the second mold core, thereby converting the linear displacement of the rack into the rotation of the second mold core, and at the same time, since there is a gear on the worm, the gear on the worm rotates with the second mold core, and the worm remains stationary, so the rotation of the worm and the second mold core is converted into axial displacement of the second mold core, and then the worm is rotated to be demolded, avoiding leaving a burr on the spiral surface of the worm when demolding, so that no joining line is generated on the spiral surface of the worm after demolding, so that the meshing friction of the worm is small when in use, the working noise is low and it has good wear resistance.

[0010] Preferably, the length extension direction of the rack is perpendicular to the axis direction of the second mold core;

[0011] The rack is fixedly connected to the driving member, and the driving member is used to drive the rack to translate along the length extension direction of the rack.

[0012] Preferably, the gear set includes a transmission gear, a first transmission wheel and a second transmission wheel, the transmission gear is meshed with the rack, and the first transmission wheel is coaxially arranged with the transmission gear;

[0013] The second transmission wheel includes a first transmission part and a second transmission part, and the first transmission part and the second transmission part are coaxially arranged;

[0014] The first transmission part is in transmission connection with the first transmission wheel, and the second transmission part is in transmission connection with the second mold core.

[0015] Preferably, the gear direction of the rack is perpendicular to the axis of the second mold core, and the axes of the transmission gear, the first transmission wheel, and the second transmission wheel are parallel to the axis of the second mold core;

[0016] The axes of the first transmission wheel and the second transmission wheel are not on the same straight line.

[0017] Preferably, the template mechanism further comprises a fixed mold base plate, a runner push plate, a front template and a rear template which are arranged in sequence;

[0018] The first mold core is arranged in the front mold plate, and the second mold core is arranged in the rear mold plate;

[0019] A glue dispensing port is provided on the fixed mold base plate, and an injection runner is provided on the runner template. One end of the injection runner is connected to the glue dispensing port, and the other end is connected to the worm cavity.

[0020] Preferably, the template mechanism further comprises a first core pushing template and a second core pushing template, one side of the first core pushing template is in contact with the second core pushing template, and the other side is in contact with the rear template;

[0021] Wherein, the second core pushing template is provided with a first mounting groove, the first core pushing template is provided with a second mounting groove, the first mounting groove and the second mounting groove cooperate to form a mounting cavity, and the mounting cavity is used to install the transmission assembly.

[0022] Preferably, the template mechanism further includes a first ejector plate, a second ejector plate and a bottom plate arranged in sequence, and a side of the first ejector plate away from the second ejector plate is opposite to a side of the second core pushing template away from the first core pushing template.

[0023] Preferably, the worm mold further comprises a locking mechanism, the locking mechanism comprising a first locking member, a second locking member and a connecting plate, the first locking member being arranged on the side wall of the runner template, and one end of the connecting plate being connected to the first locking member;

[0024] The connecting plate is provided with a sliding groove, and the second locking member passes through the sliding groove and is connected to the rear template;

[0025] Wherein, the axial length of the sliding groove is greater than the axial width of the second locking piece.

[0026] Preferably, the worm mold further comprises a pressing mechanism, the pressing mechanism comprising a pressing plate and a pulling assembly, the pressing plate being arranged between the first mold core and the second mold core;

[0027] The pulling assembly is connected to the pressing plate, and the pulling assembly is used to drive the pressing plate to separate from the first mold core.

[0028] Preferably, the pulling assembly includes a slider and a guide block, the guide block is arranged in the rear template, an axial guide hole is provided on the guide block, and an oblique guide hole is provided on the pressure plate;

[0029] The distance between the axial guide hole and the central axis of the second mold core is greater than the distance between the oblique guide hole and the central axis of the second mold core;

[0030] The slider includes an axial portion and an oblique portion, wherein the end of the axial portion away from the pressure plate is connected to the oblique portion, wherein the oblique portion passes through the oblique guide hole, the axial portion passes through the axial guide hole, and one end of the axial portion away from the oblique portion is fixedly connected to the first ejection plate.

[0031] A worm mold of the present application has at least the following technical effects:

[0032] 1. By setting a rotating mechanism, the rotating mechanism includes a rack and a gear set. The rack is meshed with the gear set, and the gear set is rotationally connected to the second mold core, thereby converting the linear displacement of the rack into the rotation of the second mold core. After the second mold core and the worm rotate, they are displaced axially, thereby realizing rotary demolding, so that no flash will appear on the screw surface of the worm, and no parting line will appear on the worm. Subsequently, the meshing friction of the worm in subsequent use is small, the working noise is low, and the wear resistance is good;

[0033] 2. By arranging the first transmission wheel, the second transmission wheel and the transmission gear to cooperate, the linear displacement of the rack is converted into the rotation of the second mold core. The second mold core runs smoothly during demolding, and the worm will not be damaged during the demolding process, which is conducive to improving the mold yield rate;

[0034] 3. By providing the first core pushing template and the second core pushing template, the mounting grooves between the first core pushing template and the second core pushing template cooperate to form a mounting cavity, which can better accommodate the transmission component, so that the transmission component drives the second mold core more stably;

[0035] 4. By providing an oblique portion and an axial portion on the slider, and then providing an oblique guide hole to cooperate with the axial guide hole, when the slider is displaced in the axial direction, the pressure plate can be driven to disengage in a direction perpendicular to the axial plane. BRIEF DESCRIPTION OF THE DRAWINGS

[0036] Figure 1 This is a schematic diagram of the three-dimensional structure of a worm mold provided in one embodiment of the present application;

[0037] Figure 2 1 is a schematic cross-sectional view of a worm mold provided in one embodiment of the present application;

[0038] Figure 3 This is a schematic diagram of a partial cross-sectional structure of the connection between the pressing mechanism and the template mechanism provided in one embodiment of the present application;

[0039] Figure 4 This is a schematic diagram of a three-dimensional structure of the connection between the rotating mechanism and the second mold core provided by an embodiment of the present application;

[0040] Figure 5 This is a schematic diagram of the three-dimensional structure of the second core pushing template provided in one embodiment of the present application;

[0041] Figure 6 This is a partial structural diagram of a rotating mechanism provided in one embodiment of the present application;

[0042] Figure 7 yes Figure 2 A magnified schematic diagram of local A.

[0043] Reference numerals: 1, worm mold; 2, template mechanism; 3, rotation mechanism; 4, locking mechanism; 5, pressing mechanism; 6, worm;

[0044] 201, first mold core; 202, second mold core; 203, fixed mold base plate; 204, runner push plate; 205, front mold plate; 206, rear mold plate; 207, first core push plate; 208, second core push plate; 209, first ejector plate; 210, second ejector plate; 211, bottom plate; 2031, dispensing port; 2041, injection runner; 2081, first mounting slot;

[0045] 31. Driving member; 32. Rack; 33. Transmission gear; 34. First transmission wheel; 35. Second transmission wheel;

[0046] 351. First transmission part; 352. Second transmission part;

[0047] 41. First locking member; 42. Second locking member; 43. Connecting plate;

[0048] 51. Pressing plate; 52. Sliding block; 53. Guide block; 511. Oblique guide hole; 521. Axial portion; 522. Oblique portion; 531. Axial guide hole. DETAILED DESCRIPTION

[0049] In order to enable those skilled in the art to better understand the technical solutions of the present disclosure, the present disclosure is described in detail, clearly, and completely in conjunction with the accompanying drawings and embodiments. It should be understood that the specific embodiments described herein are only used to explain the present disclosure and are not intended to limit the present disclosure.

[0050] In the description of this application, if there is a description of first or second, it is only for the purpose of distinguishing technical features, and cannot be understood as indicating or implying relative importance or implicitly indicating the number of the indicated technical features or implicitly indicating the order of the indicated technical features.

[0051] Those skilled in the art should understand that, in the disclosure of this application, the terms "longitudinal", "transverse", "up", "down", "front", "back", "left", "right", "vertical", "horizontal", "top", "bottom", "inside", "outside", etc., indicating the orientation or position relationship, are based on the orientation or position relationship shown in the accompanying drawings, which are only for the convenience of describing this application and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation. Therefore, the above terms cannot be understood as limiting this application.

[0052] The present application will be described in further detail below with reference to the accompanying drawings. Figures 1 to 7 illustrate.

[0053] like Figures 1 to 2 As shown, the present application provides a worm mold 1, which is used to produce a worm 6. The produced worm 6 can be used in an electronic actuator in a turbocharger of an automobile engine, and of course can also be used in other components.

[0054] like Figures 1 to 2 As shown, the worm mold 1 includes a template mechanism 2 and a rotating mechanism 3. The template mechanism 2 is provided with a worm cavity to produce the worm 6. The template mechanism 2 includes a fixed mold base plate 203, a runner push plate 204, a front template 205, a rear template 206, a first core push template 207, a second core push template 208, a first ejector plate 209, a second ejector plate 210 and a bottom plate 211, wherein the front template 205 is provided with a first mold core 201, and the rear template 206 is provided with a second mold core. The first mold core 201 and the second mold core 202 form a worm cavity. The fixed mold base plate 203 is provided with a dispensing port 2031. The runner template is provided with an injection runner 2041. One end of the injection runner 2041 is connected to the dispensing port 2031, and the other end is connected to the worm cavity. The molten colloid enters the injection runner 2041 from the dispensing port 2031, and then flows into the worm cavity through the injection runner 2041. Then, the filling and holding pressure are completed in the injection molding machine, and the worm 6 is cooled and solidified to form the worm.

[0055] The rotating mechanism 3 includes a driving member 31 and a transmission assembly. The driving member 31 is connected to the transmission assembly, and the driving member 31 is externally arranged outside the template mechanism 2; one side of the first core push template 207 is in contact with the second core push template 208, and the other side is in contact with the rear template 206. The first core push template 207 and the second core push template 208 jointly form an installation cavity, and the installation cavity is used to install the transmission assembly. The transmission assembly is connected to the second mold core 202 in transmission. When the driving member 31 is running, the transmission assembly drives the second mold core 202 to rotate, and the second mold core 202 and the spiral part of the worm 6 rotate. When the worm 6 is stationary, the second mold core 202 is displaced axially in the direction away from the first mold core 201, thereby realizing the rotational demolding of the worm mold 1. This demolding method will not produce a burr (mold line) on the spiral surface of the worm 6, and then the finished worm 6 has less meshing friction and working noise when in use, and has better wear resistance.

[0056] Specifically, such as Figures 4 to 6 As shown, the transmission assembly includes a rack 32 and a gear set, the rack 32 is connected to the driving member 31; one side of the gear set is engaged with the rack 32, and the other side is rotatably connected to the second mold core 202; Figure 5 As shown, a first mounting groove 2081 is provided on the second core push template 208, and the first mounting groove 2081 is located on the opposite end of the second core push template 208 close to the first core push template 207. The first mounting groove 2081 is recessed in the direction away from the first core push template 207, and the first mounting groove 2081 includes a rack 32 mounting portion and a gear mounting portion. The rack 32 mounting portion is basically a long rectangle, and the rack 32 is mounted on the rack 32 mounting portion. The rack 32 extends from the rack 32 portion and is connected to the driving member 31, so that the length extension direction of the rack 32 is perpendicular to the axis direction of the second mold core 202. The gear mounting portion is used to install the gear set, and the rack 32 is engaged with the gear set; the driving member 31 adopts a driving oil cylinder or a driving cylinder, and the driving member 31 drives the rack 32 to translate along the length extension direction of the rack 32, thereby driving the gear set to rotate, and the gear set drives the second mold core 202 to rotate, thereby realizing the rotation and demolding of the second mold core 202.

[0057] Correspondingly, a second mounting groove (not shown in the figure) is provided on the first core pushing template 207. The second mounting groove is located on the end face of the first core pushing template 207 facing the second core pushing template 208. The second mounting groove is recessed toward the first mold core 201. The second mounting groove and the first mounting groove 2081 correspond to form an mounting cavity, which is used to install the transmission assembly.

[0058] In this embodiment, the central axis of the second mold core 202 is used as the Y-axis reference line, and the rack 32 is set along the X-axis. Therefore, the displacement of the rack 32 on the X-axis is transmitted through the gear set, so that the second mold core 202 is displaced along the Y-axis. In this way, the rack 32 and the gear set occupy a smaller space, so that the second mold core 202 can be driven. In addition, the required transmission structure is simple and there is no need to set too many gears to achieve transmission. At the same time, it can also ensure that the driving member 31 is far away from the template mechanism 2. When the driving member 31 is driven, it will not cause vibration or heat radiation to the template mechanism 2 and the worm 6, thereby improving the yield rate after demolding.

[0059] Going further, the gear set is described in detail; Figure 6 As shown, the gear set includes a transmission gear 33, a first transmission wheel 34 and a second transmission wheel 35, and the first transmission wheel 34 is meshed with the second transmission wheel 35; wherein the first transmission wheel 34 is coaxially arranged with the transmission gear 33, and the transmission gear 33 is meshed with the rack 32, the diameter of the first transmission wheel 34 is larger than the diameter of the transmission gear 33, and there is a gap between the end face of the first transmission wheel 34 close to the transmission gear 33 and the end face of the rack 32; the second transmission wheel 35 and the first transmission wheel 34 are distributed along the X-axis plane, that is, the first transmission wheel 34 and the second transmission wheel 35 are spaced apart on the X-axis plane, and the first transmission wheel 34 is spaced apart from the second transmission wheel 35. The axes of the second transmission wheel 35 are not in the same straight line, and the central axes of the second mold core 202, the first transmission wheel 34, and the second transmission wheel 35 are parallel to each other, thereby ensuring the stability of the transmission; the end of the second mold core 202 close to the second core push template 208 is connected to a matching gear, and the matching gear is engaged with the second transmission wheel 35; then when the rack 32 is displaced along the X-axis, the transmission gear 33 drives the first transmission wheel 34 to rotate, the first transmission wheel 34 drives the second transmission wheel 35 to rotate, and the second transmission wheel 35 drives the second mold core 202 to rotate to complete the rotational demolding of the second mold core 202.

[0060] In this embodiment, the gear of the rack 32 is arranged along a plane parallel to the plane where the X-axis is located, and the gear of the rack 32 is oriented away from the second transmission wheel 35, that is, the gear of the rack 32 is oriented perpendicular to the axis of the second mold core 202; and the first transmission wheel 34 and the second transmission wheel 35 are both provided with gears; wherein, as Figure 6As shown, the second transmission wheel 35 includes a first transmission part 351 and a second transmission part 352. The first transmission part 351 and the second transmission part 352 are both provided with gears. The first transmission part 351 and the second transmission part 352 are coaxially arranged. The first transmission part 351 and the first transmission wheel 34 are arranged on the same plane. In the Y-axis direction, the second transmission part 352 is located between the rack 32 and the first transmission wheel 34. The outer diameter of the second transmission part 352 is larger than the outer diameter of the first transmission part 351. There is a gap between the end surface of the second transmission part 352 close to the rack 32 and the rack 32, so that the rack 32 and the second transmission part 352 do not interfere with each other. The first transmission part 351 is engaged with the first transmission wheel 34, and the second transmission part 352 is engaged with the second mold core 202, thereby realizing transmission. The transmission connection between the second transmission wheel 35 and the first transmission wheel 34 and the second mold core 202 is separated respectively, and there is no interference between them, thereby ensuring good transmission stability.

[0061] It should be noted that in this application, Figure 2 As shown, two groups of worm cavities are provided at the same time, and the dispensing port 2031 is connected to the two groups of worm cavities at the same time. The two groups of worm cavities are symmetrically arranged along the central axis of the dispensing port 2031, that is, one worm mold 1 can produce two worms 6 at the same time; then the first mold core 201 and the second mold core 202 are correspondingly set to two, wherein, as Figure 4 、 Figure 6 As shown, the second transmission wheel 35 is located between the two groups of second mold cores 202. The second transmission wheel 35 is engaged with the second mold cores 202 on both sides at the same time, and drives the two groups of second mold cores 202 to rotate, thereby achieving high productivity of the worm mold 1.

[0062] Further, the worm mold 1 is further described; Figure 1 As shown, the worm mold 1 also includes a locking mechanism 4, which includes a first locking member 41, a second locking member 42 and a connecting plate 43. The first locking member 41 is arranged on the side wall of the runner template, and the second locking member 42 is arranged on the rear template 206. One end of the connecting plate 43 is connected to the first locking member 41, and the other end is connected to the second locking member 42. The connecting plate 43 is arranged along the Y-axis direction, thereby achieving locking between the front template 205 and the rear template 206, which can ensure the stability and sealing of the worm mold 1 during injection molding.

[0063] Specifically, such as Figure 1As shown, a sliding groove is provided at one end of the connecting plate 43 close to the second locking piece 42, and the second locking piece 42 is connected to the rear template 206 through the sliding groove; wherein, the axial length of the sliding groove is greater than the axial width of the second locking piece 42, and the difference between the axial length of the sliding groove and the circumferential width of the second locking piece 42 is the adjustment length of the rear template 206 relative to the front template 205. The position of the second locking piece 42 in the sliding groove can be adjusted, and then the distance between the rear template 206 and the front template 205 can be adjusted to place the adjustment module and eliminate the error.

[0064] like Figure 3 、 Figure 7 As shown, the worm mold 1 is further described; the worm mold 1 also includes a pressing mechanism 5, which is used to assist the worm 6 in demoulding; wherein the pressing mechanism 5 includes a pressing plate 51 and a pulling assembly, and the pressing plate 51 is arranged between the first mold core 201 and the second mold core 202, as shown in FIG. Figure 7 As shown, the pressure plate 51 acts between the spiral portion and the head of the worm 6, and the setting plane of the pressure plate 51 is parallel to the plane of the X-axis. When the second mold core 202 is displaced axially to escape, the pressure plate 51 can press the head of the worm 6 against the first mold core 201 to ensure that the worm 6 does not displace in the axial direction, so that the second mold core 202 can be displaced axially when rotating, thereby ensuring the stability of the second mold core 202 being ejected from the mold; in this embodiment, the pulling assembly is arranged along the Y-axis as a whole, one end of the pulling assembly is connected to the pressure plate 51, and the other end is connected to the first ejection plate 209; when the first ejection plate 209 is displaced along the Y-axis, it drives the pulling assembly to move axially, and the pulling assembly is used to pull the pressure plate 51 out along the X-axis direction, thereby realizing the separation of the pressure plate 51 from the first mold core 201, and the restriction of the contact pressure plate 51 on the worm 6, so that the worm 6 can escape from the first mold core 201.

[0065] Further, such as Figure 3 As shown, the pulling assembly includes a slider 52 and a guide block 53, the slider 52 includes an axial portion 521 and an oblique portion 522, the axial portion 521 is connected to the oblique portion 522 at the end away from the pressure plate 51, the oblique portion 522 is connected to the pressure plate 51, and the axial portion 521 is fixedly connected to the first ejection plate 209; an oblique guide hole 511 is provided on the pressure plate 51, the upper end of the oblique guide hole 511 is inclined in the axial direction toward the axis direction of the second mold core 202, the oblique portion 522 is adapted to the shape contour of the oblique guide hole 511, the inclination angle of the oblique portion 522 is the same as the inclination angle of the oblique guide hole 511, and the oblique portion 522 is slidably connected to the oblique guide hole 511; the axial portion 521 is arranged along the axial direction, the guide block 53 is arranged in the rear template 206, the guide block 53 is provided with an axial guide hole 531, and the axial portion 521 is slidably connected to the axial guide hole 531; in the embodiment, as Figure 3As shown, the distance between the axial guide hole 531 and the central axis of the second mold core 202 is greater than the distance between the oblique guide hole 511 and the central axis of the second mold core 202, that is, the oblique guide hole 511 is closer to the center line of the second mold core 202. When the first ejector plate 209 drives the axial portion 521 to displace axially, the axial portion 521 drives the oblique portion 522 to displace axially. The side wall of the oblique portion 522 is an inclined surface, which converts the Y-axial force into the X-axis force, thereby displacing the pressure plate 51 along the X-axis, so that the pressure plate 51 is separated from the first mold core 201.

[0066] It should be noted that, in the embodiment, an ejection spring (not shown in the figure) is provided in the template mechanism 2, and the ejection spring acts between the front template 205 and the runner template. When the force of the pressure plate 51 on the first template disappears, the ejection spring applies an axial force to the front template 205, pushing the front template 205 toward the rear template 206, and then with the help of the inertia force of the axial displacement of the front template 205, the worm 6 can be removed from the front template 205, thereby realizing the complete demolding of the worm 6.

[0067] It should be noted that the various embodiments of the present application can be arbitrarily combined into new embodiments if the solutions do not conflict and the technical solutions can coexist.

[0068] The present application has been described in detail above. Specific examples have been used herein to illustrate the principles and implementation methods of the present application. The description of the above embodiments is intended only to facilitate understanding of the present application and its core concepts. It should be noted that, without departing from the principles of the present application, a number of improvements and modifications may be made to the present application by a person skilled in the art, and such improvements and modifications shall fall within the scope of protection of the claims of the present application.

Claims

1. A worm mold, characterized in that: It comprises a template mechanism (2) and a rotating mechanism (3), wherein the template mechanism (2) comprises a first mold core (201) and a second mold core (202), and the first mold core (201) and the second mold core (202) form a worm cavity; The rotating mechanism (3) comprises a driving member (31) and a transmission assembly, wherein the driving member (31) is connected to the transmission assembly, and the transmission assembly is connected to the second mold core (202), and the driving member (31) is used to drive the second mold core (202) to move axially in a direction away from the first mold core (201); The transmission assembly includes a rack (32) and a gear set, one end of the rack (32) is connected to the driving member (31), and the other end 1 The gear set is in transmission connection with the second mold core (202), and the gear set is in rotation connection with the second mold core (202).

2. The worm mold according to claim 1, characterized in that The length extension direction of the rack (32) is perpendicular to the axial direction of the second mold core (202); The rack (32) is fixedly connected to the driving member (31), and the driving member (31) is used to drive the rack (32) to translate along the length extension direction of the rack (32).

3. The worm mold according to claim 1, characterized in that The gear set comprises a transmission gear (33), a first transmission wheel (34) and a second transmission wheel (35), the transmission gear (33) is meshed with the rack (32), and the first transmission wheel (34) and the transmission gear (33) are coaxially arranged; The second transmission wheel (35) includes a first transmission part (351) and a second transmission part (352), wherein the first transmission part (351) and the second transmission part (352) are coaxially arranged; The first transmission part (351) is in transmission connection with the first transmission wheel (34), and the second transmission part (352) is in transmission connection with the second mold core (202).

4. The worm mold according to claim 3, characterized in that: The gear orientation direction of the rack (32) is perpendicular to the axis direction of the second mold core (202), and the axes of the transmission gear (33), the first transmission wheel (34), and the second transmission wheel (35) are parallel to the axis of the second mold core (202); The axes of the first transmission wheel (34) and the second transmission wheel (35) are not on the same straight line.

5. The worm mold according to claim 1, characterized in that: The template mechanism (2) further comprises a fixed mold base plate (203), a flow channel push plate (204), a front template (205) and a rear template (206) which are arranged in sequence; The first mold core (201) is arranged in the front mold plate (205), and the second mold core (202) is arranged in the rear mold plate (206); The fixed mold base plate (203) is provided with a glue dispensing port (2031), the runner template is provided with an injection runner (2041), one end of the injection runner (2041) is connected to the glue dispensing port (2031), and the other end is connected to the worm cavity.

6. The worm mold according to claim 5, characterized in that: The template mechanism (2) further comprises a first core pushing template (207) and a second core pushing template (208), wherein one side of the first core pushing template (207) is in contact with the second core pushing template (208), and the other side is in contact with the rear template (206); The second core pushing template (208) is provided with a first installation groove (2081), the first core pushing template (207) is provided with a second installation groove, the first installation groove (2081) cooperates with the second installation groove to form an installation cavity, and the installation cavity is used to install the transmission assembly.

7. The worm mold according to claim 6, characterized in that: The template mechanism (2) further comprises a first ejection plate (209), a second ejection plate (210) and a bottom plate (211) which are arranged in sequence, wherein the side of the first ejection plate (209) away from the second ejection plate (210) is opposite to the side of the second core pushing template (208) away from the first core pushing template (207).

8. The worm mold according to claim 7, characterized in that: The worm mold (1) further comprises a locking mechanism (4), the locking mechanism (4) comprising a first locking member (41), a second locking member (42) and a connecting plate (43), the first locking member (41) being arranged on a side wall of the runner mold plate, and one end of the connecting plate (43) being connected to the first locking member (41); The connecting plate (43) is provided with a sliding groove, and the second locking member (42) passes through the sliding groove and is connected to the rear template (206); Wherein, the axial length of the sliding groove is greater than the axial width of the second locking member (42).

9. The worm mold according to claim 8, characterized in that The worm mold (1) further comprises a pressing mechanism (5), the pressing mechanism (5) comprising a pressing plate (51) and a drawing assembly, the pressing plate (51) being arranged between the first mold core (201) and the second mold core (202); The pulling assembly is connected to the pressing plate (51), and the pulling assembly is used to drive the pressing plate (51) to separate from the first mold core (201).

10. The worm mold according to claim 9, characterized in that The drawing assembly comprises a slider (52) and a guide block (53); the guide block (53) is arranged in the rear template (206); an axial guide hole (531) is provided on the guide block (53); and an oblique guide hole (511) is provided on the pressure plate (51); The distance between the axial guide hole (531) and the central axis of the second mold core (202) is greater than the distance between the oblique guide hole (511) and the central axis of the second mold core (202); The slider (52) includes an axial portion (521) and an oblique portion (522), wherein the end of the axial portion (521) away from the pressure plate (51) is connected to the oblique portion (522), wherein the oblique portion (522) passes through the oblique guide hole (511), and the axial portion (521) passes through the axial guide hole (531), and the end of the axial portion (521) away from the oblique portion (522) is fixedly connected to the first ejection plate (209).

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