Mould frame

Abstract

The utility model relates to the technical field of precision dies, in particular to a die frame which comprises a lower die frame and an upper die frame, guide pipes are installed at the positions, close to the four corners, of the top end of the lower die frame, placing grooves are formed in the positions, close to the top ends, of the interiors of the four sets of guide pipes, and four sets of fixing grooves are formed in the top faces of the guide pipes. And fixing holes are formed in the inner walls of the bottom ends of the fixing grooves. By arranging parts such as a guide pipe, a placement groove, a fixing groove, a fixing hole, a guide sleeve, a ball, a buffer pad, a mounting ring, a fixing plate, a fixing bolt and a handheld rod, the problems that a guide mechanism in an existing mold frame is lack of a rolling device, a guide column and the guide pipe are tightly connected, large friction exists, the inner wall of the guide pipe is thinned after long-term use, and the service life of the guide pipe is shortened can be effectively solved. The problems that the connection between a guide rod and a guide pipe is not tight enough, the guide rod can slightly shift in the guiding process, the guiding precision is influenced, and therefore combined installation of an upper die base and a lower die base is influenced are solved.

Description

Technical Field

[0001] The utility model relates to the technical field of precision mold processing, in particular to a mold frame. Background Art

[0002] Injection molds are tools for producing plastic products, and they are also tools that give plastic products a complete structure and precise dimensions. Injection molding is a processing method used in mass production of certain parts with complex shapes. Specifically, it refers to the process of injecting heated and melted plastic into the mold cavity under high pressure by an injection molding machine, and then obtaining a molded product after cooling and solidification. Before injection molding, the upper and lower molds need to be closed, so the mold needs to be guided. At present, most mold frames are guided by guide columns and guide tubes.

[0003] The guide mechanism in the existing mold frame lacks a rolling device, the connection between the guide column and the guide tube is very tight, and there is a lot of friction. Long-term use will cause the inner wall of the guide tube to become thinner. The connection between the guide rod and the guide tube is not tight enough. The guide rod will have a slight offset during guiding, affecting the accuracy of the guidance, which will affect the installation of the upper mold base and the lower mold base. Therefore, corresponding improvements are needed based on the above problems. Utility Model Content

[0004] The purpose of the utility model is to provide a mold frame 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: a mold frame, comprising a lower mold frame and an upper mold frame, guide tubes are installed at the top of the lower mold frame near the four corners, and the four groups of guide tubes are provided with placement grooves at the top, the top surfaces of the guide tubes are provided with four groups of fixing grooves, and the bottom inner walls of the fixing grooves are provided with fixing holes, guide sleeves are movably placed inside the four groups of guide tubes, and a number of groups of balls are installed on the inner walls of the four groups of guide sleeves, mounting rings are installed at the tops of the four groups of guide sleeves, and four groups of fixing plates are installed on the side surfaces of the four groups of mounting rings, fixing bolts are movably screwed inside the fixing plates, and a hand-held rod is installed on one side of the fixing plates.

[0006] Preferably, guide columns are installed at the four corners of the bottom end of the upper mold frame, and the four groups of guide columns are arranged in a one-to-one correspondence with the corresponding guide sleeves.

[0007] Preferably, buffer pads are installed on the inner walls of the bottom ends of the four groups of guide sleeves.

[0008] Preferably, the four groups of mounting rings are respectively placed inside corresponding placement grooves, and the fixing plates are respectively placed inside corresponding fixing grooves.

[0009] Preferably, the fixing plate is in a movably threaded connection with a corresponding fixing hole provided on an inner wall at the bottom end of the corresponding fixing groove via a fixing bolt.

[0010] Preferably, the fixing groove passes through the top side wall of the guide tube, and the fixing groove and the placement groove are connected to each other.

[0011] Compared with the prior art, the beneficial effects of the utility model are:

[0012] The arrangement of components such as guide tubes, placement grooves, fixing grooves, fixing holes, guide sleeves, balls, buffer pads, mounting rings, fixing plates, fixing bolts and hand-held rods can effectively solve the problem that the guide mechanism in the existing mold frame lacks a rolling device, the guide column and the guide tube are tightly connected, and there is great friction. Long-term use will cause the inner wall of the guide tube to become thinner, the guide rod and the guide tube are not tightly connected, and the guide rod will have a slight offset during guiding, which affects the accuracy of the guidance, thereby affecting the problem of the integrated installation between the upper mold base and the lower mold base. BRIEF DESCRIPTION OF THE DRAWINGS

[0013] Figure 1 It is a three-dimensional structural schematic diagram of the main body of the utility model.

[0014] Figure 2 for Figure 1 Enlarged schematic diagram at point A in the middle.

[0015] Figure 3 It is a schematic diagram of the three-dimensional structure of the guide tube of the utility model.

[0016] Figure 4 It is a half-section three-dimensional structural schematic diagram of the guide sleeve of the utility model.

[0017] In the figure: 1. lower mold frame; 11. guide tube; 12. placement groove; 13. fixing groove; 14. fixing hole; 2. guide sleeve; 21. ball; 22. buffer pad; 23. mounting ring; 24. fixing plate; 25. fixing bolt; 26. hand-held rod; 3. upper mold frame; 31. guide column. DETAILED DESCRIPTION

[0018] The following will be combined with the drawings in the embodiments of the utility model to clearly and completely describe the technical solutions in the embodiments of the utility model. Obviously, the described embodiments are only 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.

[0019] See also Figures 1 to 4The utility model provides a technical solution: a mold frame, including a lower mold frame 1 and an upper mold frame 3, guide tubes 11 are installed at the top of the lower mold frame 1 near the four corners, and the four groups of guide tubes 11 are provided with placement grooves 12 at the top of the inner part, four groups of fixing grooves 13 are provided on the top surface of the guide tubes 11, and the bottom inner wall of the fixing groove 13 is provided with a fixing hole 14, the fixing groove 13 penetrates the top side wall of the guide tube 11, and the fixing groove 13 and the placement groove 12 are connected to each other.

[0020] Guide sleeves 2 are movably placed inside the four groups of guide tubes 11, and several groups of balls 21 are installed on the inner walls of the four groups of guide sleeves 2. Buffer pads 22 are installed on the inner walls of the bottom ends of the four groups of guide sleeves 2. Mounting rings 23 are installed on the tops of the four groups of guide sleeves 2, and four groups of fixing plates 24 are installed on the side surfaces of the four groups of mounting rings 23. The four groups of mounting rings 23 are respectively placed inside the corresponding placement grooves 12, and the fixing plates 24 are respectively placed inside the corresponding fixing grooves 13. The fixing plates 24 are movably screwed with the corresponding fixing holes 14 opened on the inner walls of the bottom ends of the corresponding fixing grooves 13 through fixing bolts 25. The fixing bolts 25 are movably screwed inside the fixing plates 24, and a hand-held rod 26 is installed on one side of the fixing plates 24.

[0021] Guide columns 31 are installed at the four corners of the bottom end of the upper mold frame 3 , and the four groups of guide columns 31 are respectively arranged in a one-to-one correspondence with the corresponding guide sleeves 2 .

[0022] When the upper mold frame 3 and the lower mold frame 1 are installed together, the upper mold frame 3 will move downward in the direction of the lower mold frame 1, so that the four groups of guide columns 31 will extend into the interior of the corresponding guide sleeves 2 and move downward at the same time, so that the outer surfaces of the corresponding groups of balls 21 can be fitted with the outer surfaces of the corresponding guide columns 31, thereby avoiding the phenomenon of hard friction between the outer surfaces of the corresponding guide columns 31 and the inner walls of the corresponding guide sleeves 2, so that the bottom ends of the corresponding guide columns 31 can be fitted with the top surfaces of the corresponding buffer pads 22, respectively, to complete the installation of the upper mold frame 3 and the lower mold frame 1, and can effectively solve the problem that the connection between the traditional guide tube 11 and the guide column 31 is very tight, there is a lot of friction, long-term use will cause the inner wall of the guide tube 11 to become thinner, the connection between the guide tube 11 and the guide column 31 is not tight enough, and the guide column 31 will have a small offset during guidance, affecting the guidance accuracy.

[0023] When, after long-term use, the outer surfaces of the corresponding groups of balls 21 arranged inside the corresponding guide sleeve 2 cannot be used normally due to friction, the user can rotate the fixing bolts 25 inside the four groups of fixing plates 24 installed on the side of the mounting ring 23 arranged at the top of the corresponding guide sleeve 2 accordingly, so that the corresponding fixing bolts 25 can be rotated out from the inside of the corresponding fixing holes 14 respectively, so that the corresponding fixing plates 24 can be separated from the corresponding fixing grooves 13 respectively, and thereafter, the corresponding fixing plates 24 can be moved upward out of the inside of the corresponding fixing grooves 13 by the corresponding hand-held rods 26, so that the corresponding mounting rings 23 can be moved upward out of the inside of the corresponding placement grooves 12, and then the guide sleeve 2 can be moved out of the inside of the guide tube 11, thereby completing the disassembly between the corresponding guide sleeve 2 and the corresponding guide tube 11, and thereafter, the new guide sleeve 2 can be installed into the inside of the corresponding guide tube 11 according to the above operation, and vice versa, so as to facilitate the next use.

[0024] Although the embodiments of the present invention have been shown and described, it will be appreciated by those skilled in the art that various changes, modifications, substitutions and variations may be made to the embodiments without departing from the principles and spirit of the present invention, and that the scope of the present invention is defined by the appended claims and their equivalents.

Claims

1. A mold frame, comprising a lower mold frame (1) and an upper mold frame (3), characterized in that: Guide tubes (11) are installed at the top of the lower mold frame (1) at four corners, and placement grooves (12) are opened at the top of the four groups of guide tubes (11). Four groups of fixing grooves (13) are opened on the top surface of the guide tubes (11), and the bottom inner wall of the fixing groove (13) is opened with a fixing hole (14). Guide sleeves (2) are movably placed inside the four groups of guide tubes (11), and a plurality of groups of balls (21) are installed on the inner wall of the four groups of guide sleeves (2). Mounting rings (23) are installed at the top of the four groups of guide sleeves (2), and four groups of fixing plates (24) are installed on the side surfaces of the four groups of mounting rings (23). Fixing bolts (25) are movably screwed inside the fixing plates (24), and a hand-held rod (26) is installed on one side of the fixing plates (24).

2. A mold frame according to claim 1, characterized in that: Guide columns (31) are installed at the four corners of the bottom end of the upper mold frame (3), and the four groups of guide columns (31) are arranged in a one-to-one correspondence with the corresponding guide sleeves (2).

3. A mold frame according to claim 1, characterized in that: The inner walls of the bottom ends of the four groups of guide sleeves (2) are all provided with buffer pads (22).

4. A mold frame according to claim 1, characterized in that: The four groups of mounting rings (23) are respectively placed inside the corresponding placement grooves (12), and the fixing plates (24) are respectively placed inside the corresponding fixing grooves (13).

5. A mold frame according to claim 4, characterized in that: The fixing plate (24) is in a movable threaded connection with a corresponding fixing hole (14) provided on the inner wall of the bottom end of the corresponding fixing groove (13) via a fixing bolt (25).

6. A mold frame according to claim 1, characterized in that: The fixing groove (13) penetrates the top side wall of the guide tube (11), and the fixing groove (13) and the placement groove (12) are arranged to communicate with each other.

Images