A mold fixing device

Abstract

The application discloses a die fixing device and belongs to the die positioning field.The die fixing device comprises an upper punch, a fixing device and a fixing plate which are arranged on the upper punch, and the fixing device comprises a cushion block, an adjusting frame, a transmission component and a positioning component.The cushion block is fixed with the fixing plate, and the adjusting frame is fixed on the cushion block.The transmission component comprises a top rod, and the two ends of the top rod are respectively connected with a reset mechanism and a pushing mechanism.The die fixing device can make the bearing move along the guide surface through the movement of the upper punch, so that the positioning pin fixes the switched die, and the fixing device can complete the die positioning by relying on the pure mechanical structure.The adjusting frame is arranged as a fixed part and a movable part, four surfaces of the movable part are arranged as guide surfaces, and the service life of the component is prolonged.The die positioning hole is enlarged due to long-time abrasion, the movement distance of the positioning pin can be adjusted through the adjusting component, and the die deviation is avoided.

Description

TECHNICAL FIELD

[0001] The present application relates to the field of mold positioning, in particular to a mold fixing device. BACKGROUND

[0002] Mold, industrial production by injection molding, blow molding, extrusion, die casting or forging forming, smelting, stamping and other methods to get the desired product of various molds and tools. In short, the mold is a tool for making shaped objects. Such a tool is composed of various parts, and different molds are composed of different parts. It mainly realizes the processing of the shape of the object by changing the physical state of the molded material.

[0003] Mold stamping, the upper punch moves in the vertical direction, and the mold is on the upper punch plate. The workpiece is stamped by the movement of the upper punch. In the case of using a mold in a multi-station mode, the mold needs to move during the mold switching process, which will cause inaccurate positioning, so that the stamped workpiece does not meet the requirements, for example, in the case of punching holes in the workpiece. Therefore, the switched mold needs a positioning mechanism to position the mold first and then perform the stamping action. Therefore, the present application provides a mold fixing device. SUMMARY

[0004] The present application aims at the deficiencies in the prior art and provides a mold fixing device. The positioning pin fixes the mold through the up-down movement of the upper punch. In order to solve the above technical problems, the present application solves the problems through the following technical solutions.

[0005] In order to achieve the above-mentioned purpose, the present application adopts the following technical solutions:

[0006] A mold fixing device, comprising an upper punch, a fixing device and a fixing plate arranged on the upper punch, the fixing device comprising a cushion block, an adjusting frame, a transmission component and a positioning component; the cushion block is fixed with the fixing plate, and the adjusting frame is fixed on the cushion block;

[0007] The transmission component comprises a jack rod, and the two ends of the jack rod are respectively connected with a reset mechanism and a pushing mechanism. The jack rod is in sliding fit with the upper punch, and the two ends thereof extend out of the upper punch. The two ends of the jack rod are respectively connected with the reset mechanism and the pushing mechanism. The pushing mechanism cooperates with the adjusting frame to push the jack rod to move;

[0008] The positioning component is connected with the jack rod for positioning the mold on the upper punch.

[0009] Preferably, the upper punch is provided with a left fixed seat and a right fixed seat on both sides thereof, and the two ends of the jack rod pass through the left fixed seat and the right fixed seat of the corresponding end and are in sliding fit with the same.

[0010] Preferably, the pushing mechanism comprises a bearing, a bracket, a fixing pin and a connecting block, two ends of the bracket are rotatably connected with the bearing and a first end of the connecting block respectively, a middle part of the bracket is rotatably connected with the right fixing seat through the fixing pin, and a second end of the connecting block is rotatably connected with the top rod.

[0011] Preferably, the positioning component comprises a connecting rod and a positioning pin, and two ends of the connecting rod are hingedly connected with the positioning pin and the top rod respectively.

[0012] Preferably, the connecting rod is in an inclined state, and the punch is used to limit the positioning pin in the transverse direction.

[0013] Preferably, the reset mechanism comprises a reset plate and a spring, the reset plate is fixed with the top rod, and two ends of the spring are fixed with the reset plate and the left fixing seat respectively.

[0014] Preferably, the reset mechanism further comprises a fixing rod, one end of the fixing rod is fixed with the left fixing seat, the other end of the fixing rod passes through the reset plate and continues to extend, the fixing rod is distributed on both sides of the top rod, and the spring is sleeved on the fixing rod.

[0015] Preferably, the adjusting bracket has a guide surface corresponding to the bearing.

[0016] Preferably, the adjusting bracket has a fixed part and a movable part, and the fixed part is detachably connected with the movable part.

[0017] Preferably, the movable part has a connecting part and a conversion part, an upper side of the connecting part is connected with the fixed part, and the conversion part has guide surfaces on four sides, and the conversion part can change the surface on the connecting part.

[0018] Compared with the prior art, the mold fixing device has the following beneficial effects: the mold fixing device of the present application can make the bearing move along the guide surface through the movement of the punch, so that the positioning pin can fix the switched mold, and the fixing device can complete the mold positioning by relying on a pure mechanical structure. By setting the adjusting bracket as a fixed part and a movable part, and setting the four sides of the movable part as guide surfaces, the service life of the components is increased. The positioning hole of the mold is enlarged due to long-time wear, the movement distance of the positioning pin can be adjusted through the adjusting component, and the deviation of the mold is avoided. BRIEF DESCRIPTION OF DRAWINGS

[0019] In order to more clearly illustrate the technical solutions in the embodiments of the present application, the drawings needed in the embodiments will be briefly introduced as follows. Obviously, the drawings in the following description are only some embodiments of the present application, and other drawings can be obtained by those skilled in the art without creative labor.

[0020] Figure 1 Fig. 1 is a schematic view of the overall structure of the mold fixing device of the present application.

[0021] Figure 2 Fig. 2 is a schematic view of the reset mechanism of the mold fixing device of the present application.

[0022] Figure 3 Fig. 3 is a schematic view of the mold fixing device of the present application. Figure 2 Fig. 4 is an enlarged view of the portion A in Fig. 3.

[0023] Figure 4 Fig. 5 is a schematic view of the positioning pin of the mold fixing device of the present application.

[0024] Figure 5 Fig. 6 is a schematic view of the mold fixing device of the present application. Figure 4 Fig. 7 is an enlarged view of the portion B in Fig. 6.

[0025] Figure 6 Fig. 8 is a schematic view of the adjusting frame of the mold fixing device of the present application.

[0026] Figure 7 Fig. 9 is a schematic view of the mold fixing device of the present application. Figure 6 Fig. 10 is an enlarged view of the portion C in Fig. 9.

[0027] Fig. No. Explanation 1, pad; 2, adjusting frame; 21, fixed part; 22, movable part; 221, connecting part; 2211, connecting hole; 222, conversion part; 2221, threaded hole; 23, sliding block; 24, adjusting bolt; 3, transmission part; 31, top rod; 4, positioning part; 41, connecting rod; 42, positioning pin; 43, guide pin; 5, reset mechanism; 51, reset plate; 52, spring; 53, fixed rod; 6, pushing mechanism; 61, bearing; 62, bracket; 63, fixed pin; 64, connecting block; 7, left fixed seat; 8, right fixed seat. DETAILED DESCRIPTION

[0028] The present application will be further described in details below with reference to the accompanying drawings.

[0029] The following description is provided so as to enable any person skilled in the art to practice the present application. The preferred embodiments of the present application as described below are only provided as examples, and other obvious modifications are possible by those skilled in the art. The principles defined in the following description can be used for other embodiments, modifications, improvements, equivalents, and other technical solutions without departing from the spirit and scope of the present application.

[0030] Those skilled in the art should understand that in the disclosure of the present application, the terms "longitudinal", "transverse", "upper", "lower", "left", "right", "front", "rear", "vertical", "horizontal", "top", "bottom", "inner", "outer" and the like indicate the orientation or position based on the orientation or position shown in the drawings, which is only for the convenience of the simplified description of the present application, and does not indicate or imply that the device or element referred to must have a particular orientation, be constructed and operated in a particular orientation, therefore the above terms cannot be understood as a limitation of the present application.

[0031] It can be understood that the term "one" should be understood as "at least one" or "one or more", that is, in one embodiment, the number of one element can be one, and in another embodiment, the number of the element can be multiple, and the term "one" cannot be understood as a limitation on the number.

[0032] Please refer to Figures 1-7 A mold fixing device, comprising an upper punch, a fixing device and a fixing plate arranged on the upper punch, the upper punch moves up and down, and the mold is fixed on the upper punch, and the lower part of the mold has a workbench, the upper punch, the mold, the fixing plate and the workbench are not shown in the figure, the fixing device comprises a cushion block 1, an adjusting frame 2, a transmission component 3 and a positioning component 4; the cushion block 1 is fixed with the fixing plate, the fixing plate is located on the rack and the position is fixed, the cushion block 1 is also fixed after being connected with the fixing plate, the adjusting frame 2 is fixed on the cushion block 1, the adjusting part is fixed with the cushion block 1 and the position is fixed, the transmission component 3 and the positioning component 4 move up and down with the upper punch.

[0033] The transmission component 3 comprises a top rod 31, the two ends of the top rod 31 are respectively connected with a reset mechanism 5 and a pushing mechanism 6, the top rod 31 is in sliding fit with the upper punch, and the two ends thereof extend out of the upper punch, the two ends of the top rod 31 are respectively connected with the reset mechanism 5 and the pushing mechanism 6, the pushing mechanism 6 cooperates with the adjusting frame 2 and is used for pushing the top rod 31 to move;

[0034] The positioning component 4 is connected with the top rod 31 and is used for positioning the mold on the upper punch, in the process that the upper punch drives the transmission component 3 to move up and down, the pushing mechanism 6 pushes the top rod 31 to slide on the upper punch, the movement of the top rod 31 makes the positioning component 4 act, and the reset mechanism 5, the top rod 31, the pushing mechanism 6 and the adjusting frame 2 cooperate to make the positioning component 4 reciprocate up and down, which is used for fixing after the mold switching.

[0035] The upper punch is provided with a left fixed seat 7 and a right fixed seat 8 respectively, the two ends of the ejector rod 31 pass through the left fixed seat 7 and the right fixed seat 8 of the corresponding end respectively and are in sliding fit with the same, the left fixed seat 7 and the right fixed seat 8 are fixed on the left side and the right side of the upper punch respectively, the ejector rod 31 passes through the left fixed seat 7 and the right fixed seat 8, the left side of the ejector rod 31 is connected with the reset mechanism 5, and the right side is connected with the pushing mechanism 6. This setting makes the reset mechanism 5 and the pushing mechanism 6 located outside the upper punch, which is convenient for inspection and maintenance.

[0036] The pushing mechanism 6 comprises a bearing 61, a bracket 62, a fixed pin 63 and a connecting block 64, the two ends of the bracket 62 are rotatably connected with the bearing 61 and the first end of the connecting block 64 respectively, the middle part of the bracket 62 is rotatably connected with the right fixed seat 8 through the fixed pin 63, and the second end of the connecting block 64 is rotatably connected with the ejector rod 31. Specifically, the bracket 62 is in a bent structure, the upper end of the bracket 62 is rotatably connected with the bearing 61, the fixed pin 63 supports the bracket 62 on the right fixed seat 8, and the bracket 62 rotates around the fixed pin 63 as the center, and the connecting block 64 is used for connecting the ejector rod 31 and the bracket 62. When the upper punch moves up and down, the bearing 61 rolls on the adjusting frame 2, so that the bracket 62 rotates around the fixed pin 63 as the center, and the ejector rod 31 moves left and right through the connecting block 64. The left and right movement of the ejector rod 31 makes the positioning component 4 act to position the mold after switching.

[0037] The positioning component 4 comprises a connecting rod 41 and a positioning pin 42, the two ends of the connecting rod 41 are hingedly connected with the positioning pin 42 and the ejector rod 31 respectively, the connecting rod 41 is located in the middle part of the ejector rod 31, so that the positioning pin 42 is located in the middle part of the upper punch, which is beneficial to the balance and stability of the upper punch. The movement of the ejector rod 31 drives the connecting rod 41 to act, and the connecting rod 41 drives the positioning pin 42 to move up and down. When the positioning pin 42 moves down, the mold is positioned to prevent the mold from deviating from the position. When the positioning pin 42 moves up, the positioning pin 42 contacts the positioning of the mold.

[0038] The connecting rod 41 is in an inclined state, and the upper punch limits the positioning pin 42 in the transverse direction. The connecting rod 41 is in an inclined state, which is convenient for pushing the positioning pin 42 to move up and down. There is also a guide pin 43 between the positioning pin 42 and the connecting rod 41, and the guide pin 43 and the positioning pin 42 are regarded as a whole. The upper punch has a guide plate below the connecting rod 41 to prevent hindering the action of the connecting rod. The guide plate has a through hole which limits the positioning pin 42 in the transverse direction, so that the positioning pin 42 moves up and down and inserts into the mold positioning pin 42 hole to achieve the function of positioning the mold.

[0039] The reset mechanism 5 includes a reset plate 51 fixed with the top rod 31 and a spring 52, two ends of which are fixed with the reset plate 51 and the left fixed seat 7 respectively. Before the upper punch moves downward, the spring 52 is in a compressed state. During the downward movement of the upper punch, the elastic force of the spring 52 is released, the top rod 31 moves leftward, the connecting block 64 is driven to rotate, and the bearing 61 rotates around the fixed pin 63. During the process, the positioning pin 42 moves downward to position the mold. When the upper punch moves upward, the positioning pin 42 releases the positioning of the mold, so that the mold can be switched.

[0040] The reset mechanism 5 further includes a fixed rod 53, one end of which is fixed with the left fixed seat 7, and the other end extends through the reset plate 51. The fixed rod 53 is distributed on both sides of the top rod 31, and the spring 52 is sleeved on the fixed rod 53. Specifically, the fixed rod 53 is distributed on both sides of the top rod 31. The left fixed seat 7 is provided with a threaded hole 2221, one end of the fixed rod 53 is matched with the threaded hole 2221, and the fixed rod 53 is screwed on the left fixed seat 7. This arrangement facilitates disassembly and maintenance.

[0041] The adjusting frame 2 has a guide surface corresponding to the bearing 61. The guide surface is inclined from top to bottom and to the right, providing a space for the bearing 61 to rotate around the fixed pin 63 when the upper punch moves downward. When the upper punch moves upward, the bearing 61 moves along the guide surface and rotates upward around the fixed pin 63. Through the cooperation of the bracket 62 and the connecting block 64, the top rod 31 moves rightward, the positioning pin 42 moves upward, and the reset plate 51 compresses the spring 52.

[0042] When the mold moves to a position, the fixing device completes the positioning of the mold by relying on a pure mechanical structure. No additional power is needed. The structure can adjust the proportion of the positioning period (the position and angle of the adjusting frame 2) in a movement cycle to meet the required time of automation.

[0043] The adjusting frame 2 has a fixed part 21 and a movable part 22. The fixed part 21 is fixed on the cushion block 1, and the guide surface is located on the movable part 22. The movable part 22 is provided with a sliding block 23, and the fixed part 21 is provided with a sliding groove with a length greater than that of the sliding block 23. The movable part 22 is provided with an adjusting bolt 24, and the fixed part 21 is provided with a threaded hole 2221. The sliding block 23 is aligned with the sliding groove, the adjusting bolt 24 is aligned with the threaded hole 2221, the adjusting bolt 24 is rotated, the sliding block 23 moves in the sliding groove, and the vertical surface of the movable part is aligned with the vertical surface of the fixed part.

[0044] When the guide surface is worn for a long time, the positioning pin 42 is not positioned accurately, at this time, the adjusting bolt 24 can be continuously rotated, so that the movable part 22 moves to the left to meet the accuracy of the positioning of the positioning pin 42. When it needs to be replaced, the movable part 22 is disassembled and replaced with a new one.

[0045] The positioning pin 42 is inserted into the positioning hole of the mold for a long time, which will also wear the positioning hole, at this time, the position of the movable part 22 can be adjusted by the adjusting bolt 24 to adjust the depth of the positioning pin 42 inserted into the positioning hole of the mold, so that the mold position is accurate.

[0046] The movable part 22 has a connecting part 221 and a conversion part 222, the upper side of the connecting part 221 is connected with the fixed part, the slider 23 and the adjusting bolt 24 are on the connecting part 221, the conversion part 222 has four guide surfaces, and the conversion part 222 can be changed on the connecting part 221, in order to further improve the use rate of the part, the four guide surfaces can increase the use time of the part, specifically, the two sides of the slider 23 are provided with connecting holes 2211, and the conversion part 222 is provided with threaded holes 2221, the threaded holes 2221 are four and are oppositely arranged, and the conversion part 222 is connected and fixed by the cooperation of the threaded holes 2221 and the connecting holes 2211, when one guide surface is seriously worn, the conversion part 222 can be rotated by 90° and connected with the connecting part 221, so as to achieve the purpose of replacement, this setting makes the conversion part 222 can be used four times. It should be noted that the adjusting function of the adjusting bolt 24 can still be used, the four guide surfaces and the conversion part 222 can adjust the position, and the two are matched to increase the use time of the conversion part 222 and adjust the depth of the positioning pin 42.

[0047] It should be understood by those skilled in the art that the embodiments of the application shown in the above description and the drawings are only examples and do not limit the application. The purpose of the application has been completely and effectively achieved. The function and structural principle of the application has been shown and explained in the embodiments, and the embodiments of the application can be any modification or modification without departing from the principle.

Claims

1. A mold fixing device comprising an upper punch, a fixing device provided on the upper punch, and a fixing plate, characterized by: The fixing device comprises a cushion block (1), an adjusting frame (2), a transmission component (3) and a positioning component (4); the cushion block (1) is fixed with the fixing plate, and the adjusting frame (2) is fixed on the cushion block (1); The transmission component (3) comprises a top rod (31), the two ends of the top rod (31) are respectively connected with a reset mechanism (5) and a pushing mechanism (6), the top rod (31) is in sliding fit with the upper punch, and the two ends thereof extend out of the upper punch, the two ends of the top rod (31) are respectively connected with the reset mechanism (5) and the pushing mechanism (6), the pushing mechanism (6) is matched with the adjusting frame (2) and is used for pushing the top rod (31) to move. The positioning component (4) is connected with the top rod (31) and is used for positioning the die on the upper punch, the positioning component (4) comprises a connecting rod (41) and a positioning pin (42), the two ends of the connecting rod (41) are respectively hinged with the positioning pin (42) and the top rod (31), and the connecting rod (41) is in an inclined state, and the upper punch limits the positioning pin (42) in the transverse direction. The two sides of the upper punch are respectively provided with a left fixed seat (7) and a right fixed seat (8), the pushing mechanism (6) comprises a bearing (61), a support (62), a fixed pin (63) and a connecting block (64), the two ends of the support (62) are respectively in rotary fit with the bearing (61) and the first end of the connecting block (64), the middle part of the support (62) is rotatably connected with the right fixed seat (8) through the fixed pin (63), and the second end of the connecting block (64) is in rotary fit with the top rod (31). The adjusting frame (2) has a fixed part (21) and a movable part (22), the fixed part (21) is detachably connected with the movable part (22), a sliding block (23) is arranged on the movable part (22), a sliding groove is formed in the fixed part (21), and the length of the sliding groove is greater than the length of the sliding block (23), an adjusting bolt (24) is rotatably arranged on the movable part (22), and a threaded hole (2221) is formed in the fixed part (21).

2. A mold fixture according to claim 1, wherein: The two ends of the top rod (31) respectively pass through the left fixed seat (7) and the right fixed seat (8) of the corresponding end and are in sliding fit with the same.

3. A mold fixture as defined in claim 2, wherein: The reset mechanism (5) comprises a reset plate (51) and a spring (52), the reset plate (51) is fixed with the top rod (31), and the two ends of the spring (52) are respectively fixed with the reset plate (51) and the left fixed seat (7).

4. A mold fixture as defined in claim 3, wherein: The reset mechanism (5) further comprises a fixed rod (53), one end of the fixed rod (53) is fixed with the left fixed seat (7), the other end of the fixed rod (53) passes through the reset plate (51) and continues to extend, the fixed rod (53) is arranged on the two sides of the top rod (31), and the spring (52) is sleeved on the fixed rod (53).

5. The mold fixture of claim 1, wherein: The adjusting frame (2) has a guide surface, and the guide surface corresponds to the bearing (61).

6. A mold fixture as defined in claim 5, wherein: The movable part (22) has a connecting part (221) and a conversion part (222), the upper side of the connecting part (221) is connected with the fixed part, the conversion part (222) has guiding surfaces on four sides, and the conversion part (222) can change the surface on the connecting part (221).

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