Multi-cavity thread mold

Abstract

The utility model discloses a multi-cavity thread mold, which relates to the field of thread molds, and comprises a mold frame and a rear mold fixedly arranged on the mold frame, the rear mold comprises a base plate group, a bearing plate, a push plate and a mold core, the base plate group, the bearing plate and the push plate are sequentially arranged from bottom to top, the mold core is fixedly arranged in the push plate, and the mold core is arranged in the mold frame. Main transmission sets are rotationally installed in the base plate set, a plurality of second-stage transmission sets are evenly arranged on the periphery of each main transmission set, and the second-stage transmission sets are in gear transmission with the main transmission sets. According to the utility model, the rear mold is designed into a multi-layer structure comprising the first base plate, the second base plate, the bearing plate and the push plate, so that the main transmission group, the second-stage transmission group and the third-stage transmission group can be conveniently and better mounted, and all the third-stage transmission shafts can be driven to synchronously rotate through one main shaft rod during actual processing; and after an internal thread product is formed, all the thread forming insert cores can be driven to rotate reversely through the three-stage transmission shaft.

Description

Technical Field

[0001] The utility model relates to the technical field of threaded molds, in particular to a multi-cavity threaded mold. Background Art

[0002] Injection molds play an important role in plastic molding molds. When a plastic part has internal threads, it needs to be molded with a thread molding insert (or thread core), and the demoulding of the thread molding insert is generally achieved by a rotary thread demoulding mechanism.

[0003] The existing Chinese patent with publication number CN204977302U discloses an internal thread mold, which includes: a top plate, a bottom plate, a first template arranged between the top plate and the bottom plate, a second template arranged between the first template and the bottom plate, a square iron arranged between the second template and the bottom plate, and a thread core arranged between the first template and the second template and capable of circular motion.

[0004] With respect to the above-mentioned related technologies, it is found that the existing internal thread mold has difficulties in structural layout when multiple thread forming inserts are set, and after thread forming, the multiple thread forming inserts often cannot cooperate with each other for demoulding, which easily leads to reduced processing accuracy or molding failure. Utility Model Content

[0005] The present application provides a multi-cavity threaded die, which is used to solve the problems raised in the background technology.

[0006] The utility model is achieved in this way:

[0007] A multi-hole threaded mold comprises a mold frame and a rear mold fixedly installed on the mold frame, the rear mold comprises a pad group, a support plate, a push plate and a membrane core, the pad group, the support plate and the push plate are installed in sequence from bottom to top, the membrane core is fixedly installed in the push plate, a main transmission group is rotatably installed in the pad group, a number of secondary transmission groups are evenly arranged around each main transmission group, the secondary transmission group and the main transmission group are gear-driven, a number of tertiary transmission groups are evenly arranged around each secondary transmission group, the tertiary transmission group and the secondary transmission group are gear-driven, a thread forming insert is fixedly installed on the head of the tertiary transmission group, and a mold insert is sleeved on the thread forming insert.

[0008] Furthermore, the pad group includes a first pad and a second pad, the second pad is installed on the upper end surface of the first pad, and the second pad is fixedly connected to the first pad.

[0009] Furthermore, the main transmission group includes a main shaft rod, a main top gear and a main bottom gear, and the main top gear and the main bottom gear are both sleeved and fixed on the main shaft rod.

[0010] Furthermore, the secondary transmission group includes a secondary transmission shaft, a secondary top gear and a secondary bottom gear. The secondary top gear and the secondary bottom gear are both sleeved and fixed on the secondary transmission shaft, and the secondary bottom gear is meshed with the main top gear.

[0011] Furthermore, the three-stage transmission group includes a three-stage transmission shaft and a three-stage bottom gear, the three-stage bottom gear is sleeved and fixed on the three-stage transmission shaft, and the three-stage bottom gear is meshed with the two-stage top gear.

[0012] Furthermore, bearings are fixedly mounted on the main shaft, the secondary transmission shaft and the tertiary transmission shaft.

[0013] Furthermore, the mold frame includes a bottom panel and a bracket, the bracket is symmetrically installed on the upper end surface of the bottom panel, and the bracket is fixedly connected to the bottom panel.

[0014] Compared with the prior art, the beneficial effect of the utility model is as follows: the utility model designs the rear mold into a multi-layer structure of a first pad, a second pad, a support plate and a push plate, so as to facilitate and better install the main transmission group, the secondary transmission group and the tertiary transmission group. In this way, during actual processing, all the three-stage transmission shafts can be driven to rotate synchronously by a main shaft rod, and then after the internal thread product is formed, all the thread forming inserts can be driven to rotate in the opposite direction by the three-stage transmission shaft, and then all products can be synchronously withdrawn, which has the advantages of easy use and precise processing. BRIEF DESCRIPTION OF THE DRAWINGS

[0015] In order to more clearly illustrate the technical solution of the implementation mode of the utility model, the drawings required for use in the implementation mode will be briefly introduced below. It should be understood that the following drawings only show certain embodiments of the utility model and therefore should not be regarded as limiting the scope. For ordinary technicians in this field, other relevant drawings can be obtained based on these drawings without paying creative work.

[0016] Figure 1 It is a three-dimensional diagram of the overall structure in the embodiment of the utility model;

[0017] Figure 2 It is a three-dimensional diagram of the mold frame, the pad group, the secondary transmission group and the tertiary bottom gear in the embodiment of the utility model;

[0018] Figure 3 yes Figure 1 a top view of the device shown;

[0019] Figure 4 yes Figure 3 A cross-sectional view of the device along the AA direction;

[0020] Figure 5 yes Figure 1A three-dimensional diagram showing the cooperation of the membrane core, the main transmission group, the secondary transmission group and the tertiary transmission group;

[0021] Figure 6 yes Figure 5 a front view of the device shown;

[0022] Figure 7 yes Figure 5 Bottom view of the device shown.

[0023] In the figure: 1. mold frame; 11. bottom panel; 12. bracket; 2. rear mold; 21. pad group; 211. first pad; 212. second pad; 22. support plate; 23. push plate; 24. membrane core; 3. main transmission group; 31. main shaft rod; 32. main top gear; 33. main bottom gear; 4. secondary transmission group; 41. secondary transmission shaft; 42. secondary top gear; 43. secondary bottom gear; 5. tertiary transmission group; 51. tertiary transmission shaft; 52. tertiary bottom gear; 6. thread forming insert; 7. mold insert; 8. bearing. DETAILED DESCRIPTION

[0024] In order to make the purpose, technical scheme and advantages of the embodiments of the utility model clearer, the technical scheme in the embodiments of the utility model will be clearly and completely described below in conjunction with the drawings in the embodiments of the utility model. Obviously, the described embodiments are part of the embodiments of the utility model, not all of the embodiments. Based on the embodiments in the utility model, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the utility model. Therefore, the following detailed description of the embodiments of the utility model provided in the drawings is not intended to limit the scope of the utility model for which protection is claimed, but merely represents the selected embodiments of the utility model.

[0025] Reference Figure 1 , Figure 2 , Figure 3 and Figure 4As shown, a multi-hole threaded mold includes a mold frame 1 and a rear mold 2 fixedly installed on the mold frame 1, the rear mold 2 includes a pad group 21, a support plate 22, a push plate 23 and a membrane core 24, the pad group 21, the support plate 22 and the push plate 23 are installed in sequence from bottom to top, the membrane core 24 is fixedly installed in the push plate 23, a main transmission group 3 is rotatably installed in the pad group 21, a plurality of secondary transmission groups 4 are evenly arranged around each main transmission group 3, the secondary transmission group 4 and the main transmission group 3 are gear-driven, a plurality of tertiary transmission groups 5 are evenly arranged around each secondary transmission group 4, the tertiary transmission group 5 and the secondary transmission group 4 are gear-driven, a thread forming insert 6 is fixedly installed on the head of the tertiary transmission group 5, and a mold insert 7 is sleeved on the thread forming insert 6. By setting the mold frame 1, the rear mold 2 can be stably supported to ensure that the rear mold 2 can be stably used for molding processing. At the same time, the structural setting of the rear mold 2 can ensure that the support plate 22 is supported and installed through the pad group 21, and then the push plate 23 is installed through the support plate 22. Finally, the membrane core 24 is installed on the push plate 23 for molding processing. The main transmission group 3 is rotatably installed in the pad group 21 to ensure that the main transmission group 3 can be used to rotate under the drive of an external motor when in use, and then a main transmission group 3 can be used to drive several secondary transmission groups 4 to rotate synchronously at the same time, and each secondary transmission group 4 can also drive several tertiary transmission groups 5 to rotate at the same time, and then a main transmission group 3 can be used to link all tertiary transmission groups 5 to rotate synchronously, so that after the molding process is completed, all tertiary transmission groups 5 can be used to synchronously coordinate the rotation of the threaded molding insert 6 to achieve safe demolding of the product, and the mold insert 7 is used to assist in the molding process.

[0026] Reference Figure 1 and Figure 2 As shown, the mold frame 1 includes a bottom panel 11 and a bracket 12, the bracket 12 is symmetrically mounted on the upper end surface of the bottom panel 11, and the bracket 12 is fixedly connected to the bottom panel 11. The structure of the mold frame 1 is set to ensure that two brackets 12 are fixedly mounted on the bottom panel 11, so that the support plate group 21 can be stably supported by connecting the two brackets 12, and the gap between the two brackets 12 facilitates the main transmission group 3 to be connected to the external motor through a chain.

[0027] Reference Figure 1 , Figure 2 and Figure 3 As shown, the pad group 21 includes a first pad 211 and a second pad 212, the second pad 212 is installed on the upper end surface of the first pad 211, and the second pad 212 is fixedly connected to the first pad 211. The structure of the pad group 21 ensures that the first pad 211 and the second pad 212 are stacked on each other during use, and the layered structure facilitates the installation and use of the secondary transmission group 4 and the tertiary transmission group 5.

[0028] Reference Figure 2 , Figure 5 , Figure 6 and Figure 7 As shown, the main transmission group 3 includes a main shaft rod 31, a main top gear 32 and a main bottom gear 33, and the main top gear 32 and the main bottom gear 33 are both sleeved and fixed on the main shaft rod 31. The structural setting of the main transmission group 3 ensures that when in use, the main shaft rod 31 can be connected to the secondary transmission group 4 through the main top gear 32, and connected to the external drive motor through the setting of the main bottom gear 33.

[0029] Reference Figure 2 , Figure 5 , Figure 6 and Figure 7 As shown, the secondary transmission group 4 includes a secondary transmission shaft 41, a secondary top gear 42 and a secondary bottom gear 43. The secondary top gear 42 and the secondary bottom gear 43 are both sleeved and fixed on the secondary transmission shaft 41, and the secondary bottom gear 43 is meshed with the main top gear 32. The structural setting of the secondary transmission group 4 ensures that the secondary transmission shaft 41 can be used for transmission with the tertiary transmission group 5 through the secondary top gear 42, and connected with the main transmission group 3 through the secondary bottom gear 43.

[0030] Reference Figure 2 , Figure 5 and Figure 6 As shown, the three-stage transmission group 5 includes a three-stage transmission shaft 51 and a three-stage bottom gear 52, and the three-stage bottom gear 52 is sleeved and fixed on the three-stage transmission shaft 51, and the three-stage bottom gear 52 is meshed with the two-stage top gear 42. The structural setting of the three-stage transmission group 5 ensures that the three-stage transmission shaft 51 can be connected and transmitted with the two-stage transmission group 4 through the three-stage bottom gear 52, and the thread forming insert 6 is installed on the head of the three-stage transmission shaft 51, so that the thread forming insert 6 is driven by the three-stage transmission shaft 51 to realize the rotation demoulding operation. The main shaft rod 31, the two-stage transmission shaft 41 and the three-stage transmission shaft 51 are all sleeved and fixed with bearings 8. The setting of the bearing 8 ensures that the main shaft rod 31, the two-stage transmission shaft 41 and the three-stage transmission shaft 51 can all rotate stably when in use.

[0031] Working principle: When processing is needed, the rear mold can be combined with the front mold (not shown in the figure) for injection molding. After the molding process, the main transmission group is driven to rotate by an external motor, and the main transmission group simultaneously drives the secondary transmission group to rotate, and the secondary transmission group can drive the tertiary transmission group to rotate synchronously, and then the tertiary transmission group is used to drive the thread forming insert to rotate in the opposite direction, so as to realize the withdrawal of the formed threaded product. All thread forming inserts are controlled by a main shaft rod to rotate, which is very convenient to use.

[0032] The above description is only the preferred implementation of the utility model, and is not intended to limit the utility model. For those skilled in the art, the utility model can have various modifications and changes. Any modification, equivalent replacement, improvement, etc. made within the spirit and principle of the utility model shall be included in the protection scope of the utility model.

Claims

1. A multi-cavity threaded mold, comprising a mold frame (1) and a rear mold (2) fixedly mounted on the mold frame (1), characterized in that: The rear mold (2) comprises a pad group (21), a support plate (22), a push plate (23) and a membrane core (24). The pad group (21), the support plate (22) and the push plate (23) are installed in sequence from bottom to top. The membrane core (24) is fixedly installed in the push plate (23). A main transmission group (3) is rotatably installed in the pad group (21). A plurality of secondary transmission groups (4) are evenly arranged around each main transmission group (3). The secondary transmission group (4) and the main transmission group (3) are gear-driven. A plurality of tertiary transmission groups (5) are evenly arranged around each secondary transmission group (4). The tertiary transmission group (5) and the secondary transmission group (4) are gear-driven. A threaded forming insert (6) is fixedly installed on the head of the tertiary transmission group (5). A mold insert (7) is sleeved on the threaded forming insert (6).

2. A multi-cavity thread mold according to claim 1, characterized in that: The pad group (21) comprises a first pad (211) and a second pad (212), wherein the second pad (212) is mounted on the upper end surface of the first pad (211), and the second pad (212) is fixedly connected to the first pad (211).

3. A multi-cavity thread mold according to claim 2, characterized in that: The main transmission group (3) comprises a main shaft rod (31), a main top gear (32) and a main bottom gear (33), and the main top gear (32) and the main bottom gear (33) are both sleeved and fixed on the main shaft rod (31).

4. A multi-cavity thread die according to claim 3, characterized in that: The secondary transmission group (4) comprises a secondary transmission shaft (41), a secondary top gear (42) and a secondary bottom gear (43); the secondary top gear (42) and the secondary bottom gear (43) are both sleeved and fixed on the secondary transmission shaft (41); and the secondary bottom gear (43) is meshed with the main top gear (32).

5. A multi-cavity thread die according to claim 4, characterized in that: The three-stage transmission group (5) comprises a three-stage transmission shaft (51) and a three-stage bottom gear (52). The three-stage bottom gear (52) is sleeved and fixed on the three-stage transmission shaft (51), and the three-stage bottom gear (52) is meshed with the two-stage top gear (42).

6. A multi-cavity threaded die according to claim 5, characterized in that: The main shaft (31), the secondary transmission shaft (41) and the tertiary transmission shaft (51) are all sleeved and fixed with bearings (8).

7. A multi-cavity thread die according to any one of claims 2 to 6, characterized in that: The mold frame (1) comprises a bottom panel (11) and a bracket (12); the bracket (12) is symmetrically mounted on the upper end surface of the bottom panel (11), and the bracket (12) is fixedly connected to the bottom panel (11).

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