Injection mold with lower mold base convenient to replace

Abstract

The utility model discloses an injection mold with a lower mold base convenient to replace. The injection mold comprises a mounting base, and the left side of the mounting base is fixedly connected with a mounting assembly; and the mounting assembly comprises a rotating motor, the output end of the rotating motor is fixedly connected with a two-way lead screw, and the surface of the two-way lead screw is in threaded connection with a fixed clamping plate. The lower die holder is placed in the mounting groove of the mounting base, the lower die holder is in contact with the inner wall of the mounting groove, so that the positioning block inwards extrudes the connecting spring, the positioning block moves into the sliding groove, and after the bottom end of the lower die holder is in contact with the mounting groove, the positioning block corresponds to the groove; under the action of the elastic force of the connecting spring, the connecting spring is clamped into the groove, so that the top of the lower die holder is fixed; the rotating motor is started, the two-way lead screw rotates, the two fixed clamping plates move on the surfaces of the two fixed clamping plates and get close to the lower die base, after the two fixed clamping plates move by a certain distance, the limiting plates are clamped into the positioning grooves, and therefore the bottom end of the lower die base is fixed.

Description

Technical Field

[0001] The utility model relates to the technical field of injection molds, in particular to an injection mold which is convenient for replacing a lower mold base. Background Art

[0002] An injection mold is a tool used to produce plastic products. It can give plastic products a complete structure and precise dimensions. Injection molds are a processing method used for mass production of parts with complex shapes. The heated and melted plastic is injected into the mold cavity under high pressure, and the molded product is obtained after cooling and solidification. According to the molding characteristics, it can be divided into thermosetting plastic molds and thermoplastic plastic molds; according to the molding process, it can be divided into transfer molds, blow molds, casting molds and other types. Injection molds are widely used in industrial fields, especially in the manufacturing industries such as home appliances, automobiles, and medical devices.

[0003] In the process of producing plastic parts using injection molds, due to the differences in parts size and shape, different parts need to be produced using corresponding molds, which reduces the practicality of the injection mold and increases the manufacturing cost of the parts. Utility Model Content

[0004] The purpose of the utility model is to provide an injection mold that is easy to replace the lower mold base, so as to solve the problems raised in the above background technology.

[0005] To achieve the above-mentioned purpose, the utility model provides the following technical solutions: an injection mold that is convenient for replacing a lower mold base, comprising a mounting base, wherein the left side of the mounting base is fixedly connected to a mounting assembly; the mounting assembly comprises a rotating motor, the output end of the rotating motor is fixedly connected to a bidirectional screw rod, the surface of the bidirectional screw rod is threadedly connected to a fixed splint, the top of the fixed splint is fixedly connected to a limiting plate, the interior of the fixed splint is slidably connected to a guide rod, a lower mold base is provided on the top of the mounting base, positioning grooves are provided on the left and right sides of the lower mold base, and grooves are provided on the front and back sides of the lower mold base.

[0006] As a further preferred embodiment of the present technical solution, there are two fixed splints, the two fixed splints are located inside the mounting base, the limit plates and the positioning grooves are adapted to each other, and there are two guide rods, the two guide rods are fixedly connected to the mounting base.

[0007] As a further preferred embodiment of the present technical solution, a first bevel gear is fixedly sleeved on the surface of the bidirectional screw rod, a second bevel gear is meshed at the top end of the first bevel gear, a threaded rod is fixedly connected to the top end of the second bevel gear, a movable plate is threadedly connected to the surface of the threaded rod, and a sliding rod is slidably connected to the inside of the movable plate.

[0008] As a further preferred embodiment of the present technical solution, the threaded rod and the mounting base are rotatably connected, a threaded groove is provided inside the movable plate, the threaded groove and the threaded rod are adapted to each other, and there are two sliding rods, which are located on both sides of the threaded rod.

[0009] As a further preferred embodiment of the present technical solution, a mounting groove is provided on the top of the mounting base, a guide hole is provided inside the mounting groove, and a push rod is slidably connected inside the guide hole.

[0010] As a further preferred embodiment of the present technical solution, a slide groove is provided inside the mounting base, a positioning block is slidably connected inside the slide groove, a connecting spring is fixedly connected to the side of the positioning block away from the lower die base, an end of the connecting spring away from the positioning block is fixedly connected to an extrusion plate, a threaded hole is provided inside the mounting base, and an adjusting bolt is threadedly connected to the inside of the threaded hole.

[0011] As a further preferred embodiment of the present technical solution, there are four slide grooves, the number of the positioning blocks corresponds to the number of slide grooves, the positioning blocks are adapted to the grooves, the upper and lower sides of the positioning blocks adopt an arc structure, and the adjusting bolt and the extrusion plate are rotatably connected.

[0012] The utility model provides an injection mold that is easy to replace the lower mold base, which has the following beneficial effects:

[0013] (1) The utility model places the lower die base in the mounting groove of the mounting base. As the lower die base contacts the inner wall of the mounting groove, the positioning block presses the connecting spring inward, and the positioning block moves to the inside of the slide groove. After the bottom end of the lower die base contacts the mounting groove, the positioning block corresponds to the groove and is clamped into the groove under the action of the elastic force of the connecting spring, thereby fixing the top of the lower die base; starting the rotary motor, the bidirectional screw rotates, and the two fixed clamps move on its surface and approach the lower die base. After moving a certain distance, the limit plate is clamped into the positioning groove, thereby fixing the bottom end of the lower die base.

[0014] (2) The utility model rotates the first bevel gear during the process of fixing the lower die base. Due to the meshing of the second bevel gear and the first bevel gear, the threaded rod rotates, and the movable plate drives the push rod to move downward, thereby facilitating the installation of the lower die base. When the lower die base needs to be replaced, the rotating motor drives the bidirectional screw to reverse, and the threaded rod rotates in the opposite direction, so that the movable plate drives the push rod to slide in the guide hole and lift the lower die base upward, thereby facilitating the removal of the lower die base. BRIEF DESCRIPTION OF THE DRAWINGS

[0015] Figure 1 This is a schematic diagram of the structure of the utility model;

[0016] Figure 2It is a schematic diagram of the side cross-sectional structure of the utility model;

[0017] Figure 3 This is a schematic diagram of the cross-sectional structure of the mounting base of the present utility model;

[0018] Figure 4 This is a schematic diagram of the expanded structure of the mounting base and lower die base of the utility model;

[0019] Figure 5 This is a schematic diagram of the positioning block and connecting spring structure of the utility model.

[0020] In the figure: 1. Mounting base; 2. Mounting assembly; 201. Rotating motor; 202. Bidirectional screw; 203. Fixed splint; 204. Limiting plate; 205. Guide rod; 206. Lower die base; 207. Positioning slot; 208. Groove; 3. First bevel gear; 4. Second bevel gear; 5. Threaded rod; 6. Moving plate; 7. Sliding rod; 8. Mounting slot; 9. Guide hole; 10. Push rod; 11. Slide; 12. Positioning block; 13. Connecting spring; 14. Extrusion plate; 15. Threaded hole; 16. Adjusting bolt. DETAILED DESCRIPTION

[0021] The technical solutions in the embodiments of the present invention will be described clearly and completely below with reference to the accompanying drawings in the embodiments of the present invention.

[0022] The utility model provides a technical solution: Figure 1 and Figure 5 As shown, in this embodiment, an injection mold that is convenient for replacing a lower mold base includes a mounting base 1, and a mounting assembly 2 is fixedly connected to the left side of the mounting base 1; the mounting assembly 2 includes a rotating motor 201, and the output end of the rotating motor 201 is fixedly connected to a bidirectional screw rod 202, and the surface of the bidirectional screw rod 202 is threadedly connected to a fixed splint 203, and the top of the fixed splint 203 is fixedly connected to a limiting plate 204, and the interior of the fixed splint 203 is slidably connected to a guide rod 205, and a lower mold base 206 is provided on the top of the mounting base 1, and positioning grooves 207 are provided on the left and right sides of the lower mold base 206, and grooves 208 are provided on the front and back sides of the lower mold base 206.

[0023] By starting the rotating motor 201, the bidirectional screw rod 202 rotates, and the two fixed clamps 203 move on its surface and approach the lower mold base 206. After moving a certain distance, the limit plate 204 is locked in the positioning groove 207, thereby fixing the bottom end of the lower mold base 206. The rotating motor 201 is reversed to separate the limit plate 204 from the lower mold base 206, making it convenient to replace the lower mold base 206, thereby facilitating the production of different parts and improving the practicality of the injection mold.

[0024] There are two fixed splints 203 , which are located inside the mounting base 1 . The limit plates 204 match the positioning grooves 207 . There are two guide rods 205 , which are fixedly connected to the mounting base 1 .

[0025] The surface of the bidirectional screw 202 is fixedly sleeved with a first bevel gear 3, the top of the first bevel gear 3 is meshed with a second bevel gear 4, the top of the second bevel gear 4 is fixedly connected to a threaded rod 5, the surface of the threaded rod 5 is threadedly connected to a movable plate 6, and the inside of the movable plate 6 is slidably connected to a slide rod 7.

[0026] The threaded rod 5 is rotatably connected to the mounting base 1 , a thread groove is provided inside the movable plate 6 , and the thread groove is adapted to the threaded rod 5 . There are two slide rods 7 , which are located on both sides of the threaded rod 5 .

[0027] A mounting groove 8 is formed on the top of the mounting base 1 , a guide hole 9 is formed inside the mounting groove 8 , and a push rod 10 is slidably connected to the inside of the guide hole 9 .

[0028] During the process of fixing the lower die base 206, the first bevel gear 3 rotates, and due to the engagement of the second bevel gear 4 and the first bevel gear 3, the threaded rod 5 rotates, and the movable plate 6 drives the push rod 10 to move downward, thereby facilitating the installation of the lower die base 206. When the lower die base 206 needs to be replaced, the rotating motor 201 drives the bidirectional screw rod 202 to reverse, and the threaded rod 5 rotates in the opposite direction, so that the movable plate 6 drives the push rod 10 to slide in the guide hole 9 and lifts the lower die base 206 upward, thereby facilitating the removal of the lower die base 206.

[0029] A slide groove 11 is provided inside the mounting base 1, and a positioning block 12 is slidably connected inside the slide groove 11. A connecting spring 13 is fixedly connected to the side of the positioning block 12 away from the lower mold base 206, and an extrusion plate 14 is fixedly connected to the end of the connecting spring 13 away from the positioning block 12. A threaded hole 15 is provided inside the mounting base 1, and an adjusting bolt 16 is threadedly connected to the inside of the threaded hole 15.

[0030] By rotating the adjusting bolt 16, it rotates in the threaded hole 15, and pushes the extrusion plate 14 and the positioning block 12 to slide in the slide groove 11, so that the positioning block 12 moves out of the slide groove 11 by a certain distance. During the installation and disassembly of the lower mold base 206, since the upper and lower sides of the positioning block 12 adopt an arc structure, the positioning block 12 can move more smoothly into the slide groove 11 when the lower mold base 206 moves in the installation groove 8. After the installation is completed, the positioning block 12 is stuck in the groove 208 of the lower mold base 206 through the elastic force of the connecting spring 13, thereby fixing the top of the lower mold base 206.

[0031] There are four slide grooves 11 , and the number of positioning blocks 12 corresponds to that of the slide grooves 11 . The positioning blocks 12 are adapted to the grooves 208 . The upper and lower sides of the positioning blocks 12 adopt an arc structure, and the adjusting bolt 16 and the extrusion plate 14 are rotatably connected.

[0032] The utility model provides an injection mold that is easy to replace the lower mold base. The specific working principle is as follows:

[0033] When in use, place the lower die base 206 in the mounting groove 8 of the mounting base 1. Since the lower die base 206 contacts the inner wall of the mounting groove 8, the positioning block 12 presses the connecting spring 13 inward, and the positioning block 12 moves to the inside of the slide groove 11. After the bottom end of the lower die base 206 contacts the mounting groove 8, the positioning block 12 corresponds to the groove 208 and is clamped into the groove 208 under the action of the elastic force of the connecting spring 13, thereby fixing the top of the lower die base 206; start the rotating motor 201, the bidirectional screw rod 202 rotates, and the two fixed clamps 203 move on its surface and approach the lower die base 206. After moving a certain distance, After the distance, the limit plate 204 is stuck in the positioning groove 207, thereby fixing the bottom end of the lower mold base 206. At the same time, the first bevel gear 3 rotates with the bidirectional screw rod 202. Since the second bevel gear 4 and the first bevel gear 3 are engaged, the threaded rod 5 rotates, and the movable plate 6 drives the push rod 10 to move downward, thereby facilitating the installation of the lower mold base 206. When the lower mold base 206 needs to be replaced, the rotating motor 201 drives the bidirectional screw rod 202 to reverse, and the threaded rod 5 rotates in the opposite direction, so that the movable plate 6 drives the push rod 10 to slide in the guide hole 9 and lifts the lower mold base 206 upward, thereby facilitating the removal of the lower mold base 206.

[0034] Although the embodiments of the present invention have been shown and described, it will be understood by those skilled in the art that various changes, modifications, substitutions and variations may be made to these embodiments without departing from the principles and spirit of the present invention, and the scope of the present invention is defined by the appended claims and their equivalents.

Claims

1. An injection mold for facilitating replacement of a lower mold base, comprising a mounting base (1), characterized in that: The left side of the mounting base (1) is fixedly connected to a mounting assembly (2); the mounting assembly (2) comprises a rotating motor (201), an output end of the rotating motor (201) is fixedly connected to a bidirectional screw rod (202), a surface of the bidirectional screw rod (202) is threadedly connected to a fixed clamping plate (203), a top end of the fixed clamping plate (203) is fixedly connected to a limit plate (204), an interior of the fixed clamping plate (203) is slidably connected to a guide rod (205), a lower die base (206) is provided on the top of the mounting base (1), positioning grooves (207) are provided on the left and right sides of the lower die base (206), and grooves (208) are provided on the front and rear sides of the lower die base (206).

2. The injection mold for facilitating replacement of the lower mold base according to claim 1, characterized in that: There are two fixed splints (203), the two fixed splints (203) are located inside the mounting base (1), the limit plate (204) and the positioning groove (207) are adapted to each other, and there are two guide rods (205), the two guide rods (205) are fixedly connected to the mounting base (1).

3. The injection mold for facilitating replacement of the lower mold base according to claim 1, characterized in that: The surface of the bidirectional screw rod (202) is fixedly sleeved with a first bevel gear (3), the top end of the first bevel gear (3) is meshed with a second bevel gear (4), the top end of the second bevel gear (4) is fixedly connected with a threaded rod (5), the surface of the threaded rod (5) is threadedly connected with a movable plate (6), and the interior of the movable plate (6) is slidably connected with a sliding rod (7).

4. The injection mold for facilitating replacement of the lower mold base according to claim 3, characterized in that: The threaded rod (5) is rotatably connected to the mounting base (1); a threaded groove is provided inside the movable plate (6); the threaded groove is adapted to the threaded rod (5); and there are two sliding rods (7), which are located on both sides of the threaded rod (5).

5. The injection mold for facilitating replacement of the lower mold base according to claim 1, characterized in that: A mounting groove (8) is provided on the top of the mounting base (1), a guide hole (9) is provided inside the mounting groove (8), and a top rod (10) is slidably connected inside the guide hole (9).

6. The injection mold for facilitating replacement of the lower mold base according to claim 1, characterized in that: A slide groove (11) is provided inside the mounting base (1), a positioning block (12) is slidably connected inside the slide groove (11), a connecting spring (13) is fixedly connected to the side of the positioning block (12) away from the lower die base (206), an extrusion plate (14) is fixedly connected to the end of the connecting spring (13) away from the positioning block (12), a threaded hole (15) is provided inside the mounting base (1), and an adjusting bolt (16) is threadedly connected to the inside of the threaded hole (15).

7. The injection mold for facilitating replacement of the lower mold base according to claim 6, characterized in that: The number of the slide grooves (11) is four, the number of the positioning blocks (12) and the slide grooves (11) corresponds to each other, the positioning blocks (12) and the grooves (208) are adapted to each other, the upper and lower sides of the positioning blocks (12) adopt an arc structure, and the adjusting bolt (16) and the extrusion plate (14) are rotatably connected.

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