Mould frame with top plate sliding protection function

Abstract

The invention relates to the technical field of injection molds, and discloses a mold frame with a top plate sliding protection function, the mold frame comprises a mold frame body and an injection molding machine fixing plate, in the process that the mold frame body moves towards the injection molding machine fixing plate, a fixing rod can make contact with a buffer plate, and meanwhile under the mutual cooperation of a buffer assembly and a lubricating assembly, the mold frame body can be fixed to the injection molding machine fixing plate. The oil outlet pieces arranged on the ejector rods can discharge lubricating oil to automatically lubricate the inner walls of the ejector holes formed in the die body, friction is one of the main reasons causing abrasion, abrasion to the surfaces of the ejector rods can be effectively reduced through automatic lubrication, the service life of the die frame is prolonged, and the service life of the die frame is prolonged. The surface of the ejector rod can be prevented from being directly damaged when the ejector plate is impacted by sufficient lubrication, so that the smoothness and precision of the surface of the ejector rod are kept, the automatic lubrication system can ensure that the surface of the ejector rod is always kept in a good lubrication state, and the overall service life of the mold frame is prolonged.

Description

Technical Field

[0001] The invention relates to the technical field of injection molds, in particular to a mold frame with a top plate sliding protection function. Background Art

[0002] The die frame is the support of the mold. For example, the part that combines and fixes the various parts of the mold according to a certain rule and position on the die-casting machine and enables the mold to be installed on the die-casting machine for work is called the die frame. It consists of an ejection mechanism, a guide mechanism, a pre-reset mechanism, a die foot pad, and a seat plate.

[0003] In the patent application with application announcement number CN207578898U, it includes a bottom plate, a middle plate and a top plate, grooves are opened in the bottom plate and the top plate, the middle plate is fixed to the bottom plate by a first support column, the middle plate is rotatably supported by the top plate by a second support column, the middle plate is provided with a limit platform and a block, the top plate is provided with a reinforcing rod, an ear seat and a support foot, the bottom plate is vertically fixed with a telescopic rod, the upper end of the telescopic rod is fixed with a telescopic cylinder, the upper and lower end plates of the telescopic cylinder are fixedly connected by a guide rod, the guide rod is passed through a guide sleeve, the guide sleeve is rotatably connected to the top plate by a connecting rod, the upper end plate of the telescopic cylinder is connected to one end of the shock absorber by a wire rope, and the other end of the shock absorber is hinged to the bracket fixed on the reinforcing rod. The utility model adds a wire rope and a shock absorber between the top plate and the cylinder assembly as a safety measure. When the hinged structure of the top plate and the cylinder or the second support column on the middle plate is detached due to frequent movement, the top plate can be pulled in time to prevent it from slipping.

[0004] In the prior art including the above-mentioned patents, after injection molding, the existing mold usually needs to be returned to the mold. During the return process, a limit rod is set on the back of the top plate to eject the top plate, thereby achieving the effect of ejecting the mold by the ejector rod. In this process, the repeated contact and impact between the limit rod and the top plate can easily cause metal fatigue of the top plate, and eventually cause the top plate to fall off. In addition, during the installation of the mold frame, in order to ensure that the ejector rod is located inside the mold and ejected smoothly, lubricating oil is usually applied to the outer wall of the ejector rod. During long-term use, the lubricating oil is easy to dry, which leads to uneven friction between the ejector rod and the top plate, causing the top plate to generate unbalanced force when subjected to force, thereby increasing the risk of slipping. Summary of the invention

[0005] The problem to be solved by the present invention is that it is difficult to prevent the top plate from sliding down in the existing mold frame.

[0006] In order to solve the above technical problems, the technical solution of the present invention is: a mold frame with a top plate sliding protection function, comprising a mold frame body and an injection molding machine fixing plate, a buffer component is arranged inside the mold frame body, and a lubrication component is arranged above the buffer component inside the mold frame body; A fixing rod slidably connected to the mold frame body is fixedly arranged on the fixed plate of the injection molding machine, and the fixing rod penetrates from the outside of the mold frame body to the inside thereof, the top of the mold frame body is fixedly connected to the mold body, and a top plate is slidably arranged on the inner wall of the mold frame body, and a plurality of ejector rods slidably connected to the mold body are fixedly arranged on the top plate, and the ejector rods penetrate from the bottom of the mold body to the top of the mold body; The buffer assembly includes a buffer plate sliding on the inner wall of the mold frame body, a fixing ring is fixedly arranged on the buffer plate, a plurality of buffer rotating rods are rotatably connected to the top of the fixing ring, each of the buffer rotating rods is rotatably connected to the top of an L-shaped plate, and each L-shaped plate is slidably connected to the inner wall of the top plate; The lubrication assembly includes a plurality of extrusion rods fixed on a plurality of L-shaped plates, an oil storage sponge is arranged inside the top plate above the L-shaped plate, and an outer wall of one side of the oil storage sponge contacts the plurality of extrusion rods, a sponge groove matching the oil storage sponge is provided inside the top plate, a water pipe is provided inside each of the top rods, a plurality of oil guide pipes are provided inside the top plate, and both ends of each oil guide pipe are respectively connected to the water pipe and the sponge groove, the top rod includes a smooth part and an oil outlet part, and the oil outlet part is provided with a plurality of oil outlet holes.

[0007] Preferably, the mold frame body is provided with a push hole matching the fixing rod, the mold body is provided with an ejection hole matching the ejector rod, two guide columns are fixedly arranged between the mold body and the mold frame body, and each of the guide columns is slidably connected to the top plate.

[0008] Preferably, a movable groove matching the buffer plate is formed on the top plate, a plurality of the buffer rotating rods are distributed in a circular array at the top of the fixed ring, and a plurality of straight sliding grooves matching the plurality of L-shaped plates are formed on the inner wall of the top plate.

[0009] Preferably, the oil outlet piece is inserted into the inside of the ejection hole, and the plurality of oil outlet holes are all connected to the oil guide pipe.

[0010] Preferably, a guide ring is fixedly provided at the top of the buffer plate, and the guide ring is located on the inner side of the fixed ring, a main buffer spring is fixedly provided between the top of the buffer plate and the inner wall of the top plate, and the main buffer spring is sleeved on the arc-shaped outer wall of the guide ring, and a damper is fixedly provided between the buffer plate and the top plate.

[0011] Preferably, a side fixing plate is fixedly provided on the bottom end of the top plate and located on one side of each L-shaped plate, a plug-in rod is fixedly provided on one side of each L-shaped plate, and a side buffer spring is fixedly provided between the L-shaped plate and the side fixing plate.

[0012] Preferably, the plug-in rod is plugged into the side fixing plate, the side buffer spring is sleeved on the arc-shaped outer wall of the plug-in rod, and a plurality of the side fixing plates are distributed in a ring array at the bottom end of the top plate.

[0013] Compared with the prior art, the technical solution of the present invention has the following advantages: (1) In the process of the mold frame body moving toward the fixed plate of the injection molding machine, the fixed rod can contact the buffer plate. At the same time, under the cooperation of the buffer assembly and the lubrication assembly, the oil outlet member provided on each ejector rod can discharge lubricating oil to automatically lubricate the inner wall of the ejection hole opened on the mold body. Friction is one of the main causes of wear. Through automatic lubrication, the wear on the surface of the ejector rod can be effectively reduced, and the service life of the mold frame can be extended. Sufficient lubrication can protect the surface of the ejector rod from direct damage when the ejector plate impacts, thereby maintaining the smoothness and precision of the surface of the ejector rod. The automatic lubrication system can ensure that the surface of the ejector rod is always in a good lubrication state, thereby extending the overall life of the mold frame and preventing the ejector rod from being difficult to eject due to the ejection hole being stuck, thereby causing the ejector plate fixedly connected to the ejector rod to be damaged and slipped; (2) In the present invention, when the mold frame body moves toward the fixed plate of the injection molding machine, the fixed rod can contact the buffer plate. At the same time, with the cooperation of the buffer assembly, the buffer plate can be buffered. The buffering effect can effectively reduce the direct impact of the top plate on the mold frame, thereby preventing the mold frame from cracking, deforming or being damaged due to excessive force. The buffer assembly can reduce the stress level of the mold and equipment during the impact process, extend their service life, and prevent the top plate structure from loosening or being damaged, resulting in unstable movement of the top plate and even detachment and sliding. BRIEF DESCRIPTION OF THE DRAWINGS

[0014] Figure 1 It is a schematic diagram of the overall structure of the present invention; Figure 2 This is a schematic diagram of the exploded structure of the connection between the mold frame and the mold of the present invention; Figure 3 It is a schematic diagram of the cross-sectional structure of the mold frame of the present invention; Figure 4 For the present invention Figure 3 A partial enlarged view of middle A; Figure 5 This is a schematic diagram of the connection structure between the buffer plate and the top plate of the present invention; Figure 6 This is a schematic diagram of the structure of the buffer assembly of the present invention; Figure 7 For the present invention Figure 6 A partial enlarged view of B in the middle; Figure 8 It is a schematic diagram of the cross-sectional structure of the top plate of the present invention; Fig. 9 For the present invention Figure 8 A partial enlarged view of middle C; Fig.10 This is a schematic diagram of the oil guide pipe structure of the present invention; Fig.11It is a schematic diagram of the cross-sectional structure of the top rod of the present invention.

[0015] In the figure: 1, mold frame body; 11, mold body; 12, top plate; 121, ejector rod; 13, injection molding machine fixing plate; 131, fixing rod; 14, guide column; 2. Buffer assembly; 21. Buffer plate; 22. Fixing ring; 23. Buffer rotating rod; 24. L-shaped plate; 241. Connecting rod; 242. Side buffer spring; 243. Side fixing plate; 25. Guide ring; 26. Main buffer spring; 27. Damper; 3. Lubrication assembly; 31. Extrusion rod; 32. Oil storage sponge; 33. Oil guide pipe; 34. Oil outlet part. DETAILED DESCRIPTION

[0016] In order to make the purpose, technical solution and advantages of the embodiments of the present disclosure clearer, the technical solution of the embodiments of the present disclosure will be clearly and completely described below in conjunction with the drawings of the embodiments of the present disclosure. Obviously, the described embodiments are part of the embodiments of the present disclosure, not all of the embodiments. Based on the described embodiments of the present disclosure, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the present disclosure.

[0017] Unless otherwise defined, the technical terms or scientific terms used in the present disclosure should be understood by people with ordinary skills in the field to which the present disclosure belongs. "Include" or "comprise" and other similar words used in the present disclosure mean that the elements or objects appearing before the word include the elements or objects listed after the word and their equivalents, without excluding other elements or objects. "Connect" or "connected" and other similar words are not limited to physical or mechanical connections, but may also include electrical connections, whether direct or indirect. "Up", "down", "left", "right", etc. are only used to indicate relative positional relationships. When the absolute position of the described object changes, the relative positional relationship may also change accordingly.

[0018] like Figures 1 to 11 As shown, a mold frame with a top plate sliding protection function provided by the present invention comprises a mold frame body 1 and an injection molding machine fixing plate 13, a buffer component 2 is arranged inside the mold frame body 1, and a lubrication component 3 is arranged above the buffer component 2 inside the mold frame body 1; A fixing rod 131 slidably connected to the mold frame body 1 is fixedly arranged on the fixed plate 13 of the injection molding machine, and the fixing rod 131 penetrates from the outside of the mold frame body 1 to the inside thereof, the top of the mold frame body 1 is fixedly connected to the mold body 11, and a top plate 12 is slidably arranged on the inner wall of the mold frame body 1, and a plurality of ejector rods 121 slidably connected to the mold body 11 are fixedly arranged on the top plate 12, and the ejector rods 121 penetrate from the bottom of the mold body 11 to the top of the mold body 11; The buffer assembly 2 includes a buffer plate 21 sliding on the inner wall of the mold frame body 1, a fixing ring 22 is fixedly arranged on the buffer plate 21, a plurality of buffer rotating rods 23 are rotatably connected to the top of the fixing ring 22, and an L-shaped plate 24 is rotatably connected to the top of each buffer rotating rod 23, and each L-shaped plate 24 is slidably connected to the inner wall of the top plate 12; The lubrication assembly 3 includes a plurality of extrusion rods 31 fixed on a plurality of L-shaped plates 24, an oil storage sponge 32 is arranged inside the top plate 12 above the L-shaped plate 24, and the outer wall of one side of the oil storage sponge 32 is in contact with the plurality of extrusion rods 31, a sponge groove matching the oil storage sponge 32 is provided inside the top plate 12, a water pipe is provided inside each top rod 121, a plurality of oil guide pipes 33 are provided inside the top plate 12, and both ends of each oil guide pipe 33 are respectively connected to the water pipe and the sponge groove, the top rod 121 includes a smooth part and an oil outlet part 34, and the oil outlet part 34 is provided with a plurality of oil outlet holes.

[0019] The mold frame body 1 is provided with a push hole matching the fixing rod 131 , the mold body 11 is provided with an ejection hole matching the ejector rod 121 , and two guide columns 14 are fixedly arranged between the mold body 11 and the mold frame body 1 , and each guide column 14 is slidably connected to the top plate 12 .

[0020] The top plate 12 is provided with a movable groove matching the buffer plate 21 , a plurality of buffer rotating rods 23 are distributed in a circular array at the top of the fixing ring 22 , and a plurality of straight sliding grooves matching the plurality of L-shaped plates 24 are provided on the inner wall of the top plate 12 .

[0021] The oil outlet member 34 is inserted into the top outlet hole, and the multiple oil outlet holes are connected to the oil guide pipe 33. Lubricating oil is arranged inside the oil storage sponge 32, and the outer wall of the top plate 12 is provided with an oil inlet pipe connected to the sponge groove.

[0022] When the mold frame body 1 moves toward the injection molding machine fixed plate 13, the fixed rod 131 can contact the buffer plate 21 slidably connected to the bottom end of the top plate 12. During this process, the fixed rod 131 can drive the buffer plate 21 to slide on the inner wall of the top plate 12, and at the same time drive the fixed ring 22 fixedly connected to the buffer plate 21 to move upward. At this time, since the L-shaped plate 24 is slidably connected to the straight slide groove, the multiple buffer rotating rods 23 rotatably connected to the fixed ring 22 can be pushed to rotate around the connection position with the L-shaped plate 24, thereby driving the extrusion rod fixedly connected to the L-shaped plate 24. 31 slides, and at this time, the multiple extrusion rods 31 can slide in the direction away from the central axis of the fixed ring 22 at the same time, which can squeeze the oil storage sponge 32 to deform, and push the lubricating oil inside the oil storage sponge 32 into the multiple ejector rods 121 through the multiple oil guide pipes 33, and finally be discharged through the oil outlet parts 34 arranged on the ejector rods 121, so as to lubricate the inner wall of the ejection hole opened on the mold body 11, so as to prevent the ejector rod 121 from being difficult to eject due to the ejection hole being stuck, thereby causing the ejector rod 121 to be damaged and slipped.

[0023] A guide ring 25 is fixedly provided at the top of the buffer plate 21, and the guide ring 25 is located on the inner side of the fixed ring 22. A main buffer spring 26 is fixedly provided between the top of the buffer plate 21 and the inner wall of the top plate 12, and the main buffer spring 26 is sleeved on the arc-shaped outer wall of the guide ring 25. A damper 27 is fixedly provided between the buffer plate 21 and the top plate 12.

[0024] A side fixing plate 243 is fixedly provided on the bottom end of the top plate 12 at one side of each L-shaped plate 24 , a plug-in rod 241 is fixedly provided on one side of each L-shaped plate 24 , and a side buffer spring 242 is fixedly provided between the L-shaped plate 24 and the side fixing plate 243 .

[0025] The plug-in rod 241 is plugged into the side fixing plate 243 , and the side buffer spring 242 is sleeved on the arc-shaped outer wall of the plug-in rod 241 . A plurality of side fixing plates 243 are distributed at the bottom end of the top plate 12 in a ring array.

[0026] When the mold frame body 1 moves toward the injection molding machine fixed plate 13, the fixed rod 131 can contact and collide with the buffer plate 21, which can drive the buffer plate 21 to slide on the inner wall of the top plate 12, and at the same time, it can drive the fixed ring 22 fixedly connected to the buffer plate 21 to move upward, thereby pushing the multiple buffer rotating rods 23 rotatably connected to the fixed ring 22 to rotate around the connection position with the L-shaped plate 24, thereby driving the L-shaped plate 24 to slide and the inner wall of the straight slide groove. At this time, multiple L-shaped plates 24 can slide toward the side fixed plate 243 at the same time, and can compress multiple side buffer springs 242 at the same time. At the same time, the sliding of the buffer plate 21 toward the top plate 12 can compress the main buffer spring 26 fixed between the top plate 12 and the buffer plate 21, and at the same time, with the cooperation of the damper 27, it can play a role in buffering and reducing vibration of the fixed rod 131.

[0027] The working principle and use process of the present invention are as follows: when the mold frame body 1 moves toward the fixed plate 13 of the injection molding machine, the fixed rod 131 can contact the buffer plate 21 slidably connected to the bottom end of the top plate 12. During this process, the fixed rod 131 can drive the buffer plate 21 to slide on the inner wall of the top plate 12, and at the same time drive the fixed ring 22 fixedly connected to the buffer plate 21 to move upward. At this time, since the L-shaped plate 24 is slidably connected to the straight slide groove, the multiple buffer rotating rods 23 rotatably connected to the fixed ring 22 can be pushed to rotate around the connection position with the L-shaped plate 24, thereby driving the extrusion rods 31 fixedly connected to the L-shaped plate 24 to slide. At this time, the multiple extrusion rods 31 can simultaneously slide in the direction away from the central axis of the fixed ring 22 to squeeze the oil storage sponge. 32 is deformed, and the lubricating oil inside the oil storage sponge 32 is pushed into the interior of the multiple ejector rods 121 through the multiple oil guide pipes 33, and is finally discharged through the oil outlet piece 34 arranged on the ejector rod 121, so as to lubricate the inner wall of the ejection hole opened on the mold body 11. At the same time, the L-shaped plate 24 can slide on the inner wall of the straight slide groove. At this time, the multiple L-shaped plates 24 can slide toward the side fixing plate 243 at the same time, and can compress the multiple side buffer springs 242 at the same time. At the same time, the sliding of the buffer plate 21 toward the top plate 12 can compress the main buffer spring 26 fixed between the top plate 12 and the buffer plate 21, and at the same time, with the cooperation of the damper 27, it can play a role in buffering and reducing vibration of the fixing rod 131.

[0028] The above embodiments are only exemplary embodiments of the present invention and are not intended to limit the present invention. The protection scope of the present invention is defined by the claims. Those skilled in the art may make various modifications or equivalent substitutions to the present invention within the essence and protection scope of the present invention, and such modifications or equivalent substitutions shall also be deemed to fall within the protection scope of the present invention.

Claims

1. A mold frame with a top plate sliding protection function, comprising a mold frame body (1) and an injection molding machine fixing plate (13), characterized in that: A buffer component (2) is arranged inside the mold frame body (1), and a lubrication component (3) is arranged above the buffer component (2) inside the mold frame body (1); A fixing rod (131) slidably connected to the mold frame body (1) is fixedly arranged on the fixed plate (13) of the injection molding machine, and the fixing rod (131) passes through from the outside of the mold frame body (1) to the inside thereof; the top of the mold frame body (1) is fixedly connected to the mold body (11); a top plate (12) is slidably arranged on the inner wall of the mold frame body (1); a plurality of top rods (121) slidably connected to the mold body (11) are fixedly arranged on the top plate (12), and the top rods (121) pass through from the bottom of the mold body (11) to the top of the mold body (11); The buffer assembly (2) comprises a buffer plate (21) which slides on the inner wall of the mold frame body (1), a fixing ring (22) is fixedly arranged on the buffer plate (21), a top end of the fixing ring (22) is rotatably connected to a plurality of buffer rotating rods (23), a top end of each buffer rotating rod (23) is rotatably connected to an L-shaped plate (24), and each L-shaped plate (24) is slidably connected to the inner wall of the top plate (12); The lubrication assembly (3) comprises a plurality of extrusion rods (31) fixed on a plurality of L-shaped plates (24); an oil storage sponge (32) is arranged inside the top plate (12) above the L-shaped plate (24); an outer wall of one side of the oil storage sponge (32) contacts the plurality of extrusion rods (31); a sponge groove matching the oil storage sponge (32) is provided inside the top plate (12); a water pipe is provided inside each of the top rods (121); a plurality of oil guide pipes (33) are provided inside the top plate (12); two ends of each oil guide pipe (33) are respectively connected to the water pipe and the sponge groove; the top rod (121) comprises a smooth surface part and an oil outlet part (34); and a plurality of oil outlet holes are provided on the oil outlet part (34).

2. A mold frame with a top plate sliding protection function according to claim 1, characterized in that: The mold frame body (1) is provided with a push hole matching the fixing rod (131), the mold body (11) is provided with an ejection hole matching the ejector rod (121), and two guide columns (14) are fixedly arranged between the mold body (11) and the mold frame body (1), and each of the guide columns (14) is slidably connected to the ejector plate (12).

3. The mold frame with top plate sliding protection function according to claim 1, characterized in that: The top plate (12) is provided with a movable groove matching the buffer plate (21), a plurality of the buffer rotating rods (23) are distributed in a ring array at the top of the fixing ring (22), and the inner wall of the top plate (12) is provided with a plurality of straight sliding grooves matching the plurality of L-shaped plates (24).

4. The mold frame with top plate sliding protection function according to claim 1, characterized in that: The oil outlet member (34) is inserted into the inside of the ejection hole, and the plurality of oil outlet holes are all connected to the oil guide pipe (33).

5. The mold frame with top plate sliding protection function according to claim 1, characterized in that: A guide ring (25) is fixedly provided at the top end of the buffer plate (21), and the guide ring (25) is located inside the fixed ring (22); a main buffer spring (26) is fixedly provided between the top end of the buffer plate (21) and the inner wall of the top plate (12), and the main buffer spring (26) is sleeved on the arc-shaped outer wall of the guide ring (25); and a damper (27) is fixedly provided between the buffer plate (21) and the top plate (12).

6. The mold frame with top plate sliding protection function according to claim 1, characterized in that: A side fixing plate (243) is fixedly arranged on the bottom end of the top plate (12) and located on one side of each L-shaped plate (24), a plug-in rod (241) is fixedly arranged on one side of each L-shaped plate (24), and a side buffer spring (242) is fixedly arranged between the L-shaped plate (24) and the side fixing plate (243).

7. The mold frame with top plate sliding protection function according to claim 6, characterized in that: The plug-in rod (241) is plugged onto the side fixing plate (243), the side buffer spring (242) is sleeved onto the arc-shaped outer wall of the plug-in rod (241), and a plurality of the side fixing plates (243) are distributed in a ring array at the bottom end of the top plate (12).

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