Die assembly positioning structure

Abstract

The utility model discloses a mould closing positioning structure, which relates to the technical field of mould manufacturing and comprises a mould upper plate, hydraulic rods are fixedly mounted at four corners of the bottom of the mould upper plate, a mould lower plate is fixedly mounted at the bottom ends of the four hydraulic rods, an upper mould is fixedly mounted at the bottom of the mould upper plate, and a lower mould is fixedly mounted at the bottom of the mould lower plate. A positioning cabin is formed in the upper mold, a positioning mechanism is arranged in an inner cavity of the positioning cabin, upper extension plates are fixedly mounted below the left side and the right side of the upper mold, a lower mold is fixedly mounted at the top of the mold lower plate, and lower extension plates are fixedly mounted above the left side and the right side of the lower mold. Through mutual cooperation of the upper die, the positioning cabin and the positioning mechanism, when a metal plate is placed on the top of the lower die, the metal plate is stably positioned through cooperation with the telescopic positioning telescopic cylinder, and meanwhile contact between the upper die box and the lower die is not affected.

Description

Technical Field

[0001] The utility model relates to the technical field of mold manufacturing, in particular to a mold closing and positioning structure. Background Art

[0002] A stamping die is a processing device that uses a hydraulic cylinder as output power to press the punch and die together, thereby extruding the metal into shape. The existing technology has the following problems:

[0003] Because the existing stamping dies lack a pre-positioning mechanism for the metal plate, during the positioning and stamping process of the metal plate, when the punch or die drives the metal plate to slide up and down, the metal plate is likely to slide on the surface of the die, so that after the stamping and closing of the die, an accurate stamping product cannot be obtained. At the same time, in order to ensure mutual alignment when the upper and lower dies are merged, guide rods and guide grooves are generally installed on the opposite surfaces of the two dies, and the guide rods are inserted into the guide grooves for positioning when merging. However, the design of the guide groove, whether in the upper or lower die, will leave impurities or foreign matter inside after long-term use. With the long-term insertion of the guide rod, dust will eventually accumulate deep in the inner wall of the guide groove, resulting in the upper and lower dies being unable to be completely merged. This can only be avoided by manual cleaning. Utility Model Content

[0004] The utility model provides a mold closing and positioning structure to solve the problems raised in the above background technology.

[0005] In order to solve the above technical problems, the technical solution adopted by the utility model is:

[0006] A mold closing and positioning structure comprises a mold upper plate, hydraulic rods are fixedly mounted on the four bottom corners of the mold upper plate, a mold lower plate is fixedly mounted on the bottom ends of the four hydraulic rods, an upper mold is fixedly mounted on the bottom of the mold upper plate, a positioning cabin is provided inside the upper mold, a positioning mechanism is provided in the inner cavity of the positioning cabin, upper extension plates are fixedly mounted below the left and right sides of the upper mold, a lower mold is fixedly mounted on the top of the mold lower plate, and lower extension plates are fixedly mounted above the left and right sides of the lower mold.

[0007] A further improvement of the technical solution of the utility model is that: the positioning mechanism includes four limiting discs and a rotating rod, the outer walls of the four limiting discs are fixedly connected with a disc connecting plate to form a square, the bottoms of the four limiting discs are fixedly installed with positioning telescopic cylinders, the inner walls of the four positioning telescopic cylinders are slidably installed with fixed sliding rods, the top ends of the four fixed sliding rods respectively penetrate to the top of the four limiting discs and are fixedly connected to the top of the inner wall of the positioning cabin, the tops of the four limiting discs are fixedly installed with compression springs, the four fixed sliding rods are located on the inner sides of the four compression springs, and the top ends of the four compression springs are fixedly connected to the top of the inner wall of the positioning cabin.

[0008] A further improvement of the technical solution of the utility model is that the front end of the rotating rod penetrates through the front side of the upper mold and is fixedly installed with a rotating handle, the rear end of the rotating rod penetrates through the inner cavity of the positioning cabin and is fixedly installed with an L-shaped rotating rod, and the upper rear side of the horizontal part of the L-shaped rotating rod overlaps with the bottom of the front disc connecting plate.

[0009] A further improvement of the technical solution of the utility model is that: the bottom ends of the four positioning telescopic cylinders are each provided with an anti-slip mechanism, the four anti-slip mechanisms each include a metal block, the four metal blocks are respectively fixedly installed on the bottoms of the four positioning telescopic cylinders, the outer walls of the four metal blocks are fixedly installed with rubber sleeves, and the bottoms of the four rubber sleeves are evenly fixedly installed with a plurality of anti-slip rubber strips.

[0010] A further improvement of the technical solution of the utility model is that three mold positioning guide rods are fixedly installed on the bottom of the two upper extension plates, and three mold positioning guide grooves are formed on the two lower extension plates, and after the upper mold and the lower mold are combined, the three mold positioning guide rods respectively pass through the three mold positioning guide grooves.

[0011] Due to the adoption of the above technical solution, the utility model has achieved the following technical progress compared with the prior art:

[0012] 1. The utility model provides a mold clamping and positioning structure. Through the mutual cooperation of the upper mold, the positioning cabin and the positioning mechanism, when the metal plate is placed on the top of the lower mold, the metal plate is stably positioned in cooperation with the retractable positioning telescopic cylinder, and the contact between the upper mold box and the lower mold is not affected.

[0013] 2. The utility model provides a mold closing and positioning structure. When the upper mold and the lower mold are merged, the mold positioning guide rod under the upper extension plate is inserted into and passes through the positioning guide groove provided in the lower extension plate through the cooperation of the upper extension plate, the lower extension plate, the mold positioning guide rod and the positioning guide groove, thereby completing the docking and positioning. The through positioning guide groove is used to prevent dust accumulation inside, thereby ensuring the fit between the molds when closing the molds. BRIEF DESCRIPTION OF THE DRAWINGS

[0014] Figure 1 It is an overall schematic diagram of the structure of the utility model;

[0015] Figure 2 It is a cross-sectional schematic diagram of the upper mold of the utility model structure;

[0016] Figure 3 It is a schematic diagram of the positioning mechanism of the utility model structure;

[0017] Figure 4 It is a schematic diagram of the anti-skid mechanism of the utility model structure;

[0018] Figure 5 It is a schematic diagram of the upper extension plate and the lower extension plate of the structure of the utility model.

[0019] In the figure: 1. mold upper plate; 11. upper mold; 12. positioning cabin; 13. positioning mechanism; 131. limit disc; 132. disc connecting plate; 133. positioning telescopic cylinder; 134. fixed slide rod; 135. compression spring; 136. anti-skid mechanism; 1361. metal block; 1362. rubber sleeve; 1363. anti-skid rubber strip; 137. rotating rod; 138. L-shaped rotating rod; 139. rotating handle; 14. upper extension plate; 141. mold positioning guide rod; 2. hydraulic rod; 3. mold lower plate; 31. lower mold; 32. lower extension plate; 321. mold positioning guide groove. DETAILED DESCRIPTION

[0020] In order to make the technical means, creative features, objectives and effects achieved by the present invention easy to understand, the present invention is further described below in conjunction with specific implementation methods.

[0021] like Figure 1 , Figure 2 As shown, the utility model provides a mold clamping and positioning structure, including a mold upper plate 1, four corners of the bottom of the mold upper plate 1 are fixedly installed with hydraulic rods 2, the bottom ends of the four hydraulic rods 2 are fixedly installed with a mold lower plate 3, an upper mold 11 is fixedly installed at the bottom of the mold upper plate 1, a positioning cabin 12 is opened inside the upper mold 11, and a positioning mechanism 13 is provided in the inner cavity of the positioning cabin 12, upper extension plates 14 are fixedly installed below the left and right sides of the upper mold 11, a lower mold 31 is fixedly installed on the top of the mold lower plate 3, and lower extension plates 32 are fixedly installed above the left and right sides of the lower mold 31;

[0022] When the upper plate 1 of the mold is pressed down by the hydraulic rod 2, the upper mold 11 and the lower mold 31 on the top of the lower plate 3 of the mold are used to punch the metal plate placed in the lower mold 31, and the metal plate is extruded into a desired shape using the concave mold in the lower mold 31 and the convex mold at the bottom of the upper mold 11.

[0023] like Figure 3 As shown, the positioning mechanism 13 includes four limiting discs 131 and a rotating rod 137. The outer walls of the four limiting discs 131 are fixedly connected with disc connecting plates 132 to form a square. The bottoms of the four limiting discs 131 are fixedly installed with positioning telescopic cylinders 133. The inner walls of the four positioning telescopic cylinders 133 are slidably installed with fixed slide bars 134. The top ends of the four fixed slide bars 134 respectively penetrate the tops of the four limiting discs 131 and are fixedly connected to the top of the inner wall of the positioning cabin 12. 1 is fixedly installed with a compression spring 135 on the top, four fixed slide bars 134 are located on the inner side of the four compression springs 135, the top ends of the four compression springs 135 are fixedly connected to the top of the inner wall of the positioning chamber 12, the front end of the rotating rod 137 penetrates to the front side of the upper mold 11 and is fixedly installed with a rotating handle 139, the rear end of the rotating rod 137 penetrates to the inner cavity of the positioning chamber 12 and is fixedly installed with an L-shaped rotating rod 138, and the rear side of the upper horizontal part of the L-shaped rotating rod 138 overlaps with the bottom of the front disc connecting plate 132;

[0024] When the upper mold 11 is lifted as a whole, the positioning telescopic cylinder 133 in the positioning chamber 12 uses the compression spring 135 on the top of the limiting disc 131, so that the anti-skid mechanism 136 at the bottom of the positioning telescopic cylinder 133 is closely attached to the surface of the metal plate placed in the lower mold 31. When the upper mold 11 descends, the four positioning telescopic cylinders 133 slide upward on the outer walls of the four fixed slide bars 134 on the top of the inner wall of the positioning chamber 12, so that they are squeezed and retracted upward as the upper mold 11 descends, without affecting the normal stamping of the metal plate. When the upper mold 11 is stamped and raised, the positioning telescopic cylinder 133 is reset downward under the rebound action of the compression spring 135. When replacing the metal plate, it is only necessary to rotate the rotating handle 139 to drive the rotating rod 13 7 is rotated, so that the L-shaped rotating rod 138 is turned over 180 degrees, so that the L-shaped rotating rod 138 lifts the disc connecting plate 132 in the front direction, so as to reserve a placement space for the metal plate on the lower mold 31. After the rotating handle 139 is rotated and reset, the positioning telescopic cylinder 133 can move downward under the action of the compression spring 135, so that the anti-skid mechanism 136 can be closely attached to the top of the metal plate again to position the metal plate. The rubber sleeve 1362 on the outer wall of the metal block 1361 included in the anti-skid mechanism 136 and the plurality of anti-skid rubber strips 1363 at the bottom of the rubber sleeve 1362 can be used to increase the friction force when the positioning telescopic cylinder 133 contacts the metal plate, thereby improving the stability of positioning.

[0025] like Figure 4 , Figure 5As shown, the bottom ends of the four positioning telescopic cylinders 133 are all provided with anti-skid mechanisms 136, and the four anti-skid mechanisms 136 all include metal blocks 1361, and the four metal blocks 1361 are fixedly installed on the bottoms of the four positioning telescopic cylinders 133 respectively, and the outer walls of the four metal blocks 1361 are fixedly installed with rubber sleeves 1362, and the bottoms of the four rubber sleeves 1362 are evenly fixedly installed with a plurality of anti-skid rubber strips 1363, and the bottoms of the two upper extension plates 14 are fixedly installed with three mold positioning guide rods 141, and the two lower extension plates 32 are provided with three mold positioning guide grooves 321 that pass through from top to bottom, and after the upper mold 11 and the lower mold 31 are combined, the three mold positioning guide rods 141 respectively pass through the three mold positioning guide grooves 321;

[0026] The plurality of anti-skid rubber strips 1363 at the bottom of the rubber sleeve 1362 increase the friction force when the positioning telescopic cylinder 133 contacts the metal plate, thereby improving the stability of positioning. When the upper mold 11 and the lower mold 31 are combined, the three mold positioning guide rods 141 at the bottom of the upper extension plate 14 are inserted into and pass through the three mold positioning guide grooves 321 provided in the lower extension plate 32, thereby maintaining the docking accuracy between the upper mold 11 and the lower mold 31 while avoiding the accumulation of dust and impurities in the mold positioning guide grooves 321, and also facilitating cleaning.

[0027] The working principle of the mold clamping and positioning structure is described in detail below.

[0028] like Figure 1-5As shown, when the upper plate 1 of the mold is pressed down by the hydraulic rod 2, the upper mold 11 and the lower mold 31 on the top of the lower plate 3 of the mold are used to stamp the metal plate placed in the lower mold 31, and the metal plate is squeezed into a required shape by using the concave mold in the lower mold 31 and the convex mold at the bottom of the upper mold 11. When the upper mold 11 is lifted as a whole, the positioning telescopic cylinder 133 in the positioning cabin 12 uses the compression spring 135 on the top of the limiting disc 131, so that the anti-slip mechanism 136 at the bottom of the positioning telescopic cylinder 133 is tightly against the surface of the metal plate placed in the lower mold 31. When the upper mold 11 descends, the four positioning telescopic cylinders 133 slide upward on the outer walls of the four fixed sliding rods 134 on the top of the inner wall of the positioning cabin 12, so that they are squeezed and retracted upward as the upper mold 11 descends, without affecting the normal stamping of the metal plate. When the upper mold 11 is stamped and raised, the positioning telescopic cylinder 133 is reset downward under the rebound action of the compression spring 135. When replacing the metal plate, it is only necessary to rotate the rotating handle 139 to drive the rotating rod 137 to rotate, so that The L-shaped rotating rod 138 is flipped 180 degrees, so that the L-shaped rotating rod 138 lifts the disc connecting plate 132 in the front direction, so that a placement space can be reserved for the metal plate on the lower mold 31. After the rotating handle 139 is rotated and reset, the positioning telescopic cylinder 133 can move downward under the action of the compression spring 135, so that the anti-skid mechanism 136 can be re-closed to the top of the metal plate to position the metal plate. The rubber sleeve 1362 on the outer wall of the metal block 1361 included in the anti-skid mechanism 136 and the several anti-skid rubber strips 1363 at the bottom of the rubber sleeve 1362 are used to increase the friction force when the positioning telescopic cylinder 133 contacts the metal plate, thereby improving the positioning stability. When the upper mold 11 and the lower mold 31 are merged, the three mold positioning guide rods 141 at the bottom of the upper extension plate 14 are inserted into and passed through the three mold positioning guide grooves 321 opened in the lower extension plate 32, so that the upper mold 11 and the lower mold 31 maintain the docking accuracy while avoiding the accumulation of dust and impurities in the mold positioning guide grooves 321, and it is also convenient to clean.

[0029] The above generally describes the present invention in detail, but it is obvious to a person skilled in the art that some modifications or improvements can be made to the present invention. Therefore, modifications or improvements that do not depart from the spirit of the present invention are within the scope of protection of the present invention.

Claims

1. A mold clamping and positioning structure, comprising a mold upper plate (1), characterized in that: Hydraulic rods (2) are fixedly mounted at the four corners of the bottom of the mold upper plate (1), and a mold lower plate (3) is fixedly mounted at the bottom ends of the four hydraulic rods (2). An upper mold (11) is fixedly mounted at the bottom of the mold upper plate (1), a positioning cabin (12) is provided inside the upper mold (11), and a positioning mechanism (13) is provided in the inner cavity of the positioning cabin (12). Upper extension plates (14) are fixedly mounted below the left and right sides of the upper mold (11), a lower mold (31) is fixedly mounted on the top of the mold lower plate (3), and lower extension plates (32) are fixedly mounted above the left and right sides of the lower mold (31).

2. A mold clamping and positioning structure according to claim 1, characterized in that: The positioning mechanism (13) comprises four limiting discs (131) and a rotating rod (137). The outer walls of the four limiting discs (131) are fixedly connected with disc connecting plates (132) to form a square. The bottoms of the four limiting discs (131) are fixedly installed with positioning telescopic cylinders (133). The inner walls of the four positioning telescopic cylinders (133) are slidably installed with fixed sliding rods (134). The top ends of the four fixed sliding rods (134) respectively penetrate the tops of the four limiting discs (131) and are fixedly connected to the top of the inner wall of the positioning cabin (12). The top ends of the four limiting discs (131) are fixedly installed with compression springs (135). The four fixed sliding rods (134) are located on the inner sides of the four compression springs (135). The top ends of the four compression springs (135) are fixedly connected to the top of the inner wall of the positioning cabin (12).

3. A mold clamping and positioning structure according to claim 2, characterized in that: The front end of the rotating rod (137) passes through the front side of the upper mold (11) and is fixedly installed with a rotating handle (139), and the rear end of the rotating rod (137) passes through the inner cavity of the positioning cabin (12) and is fixedly installed with an L-shaped rotating rod (138), and the rear side above the horizontal part of the L-shaped rotating rod (138) overlaps with the bottom of the front disc connecting plate (132).

4. A mold clamping and positioning structure according to claim 3, characterized in that: The bottom ends of the four positioning telescopic cylinders (133) are all provided with anti-skid mechanisms (136), and the four anti-skid mechanisms (136) all include metal blocks (1361). The four metal blocks (1361) are respectively fixedly installed on the bottoms of the four positioning telescopic cylinders (133), and the outer walls of the four metal blocks (1361) are all fixedly installed with rubber sleeves (1362), and the bottoms of the four rubber sleeves (1362) are evenly fixedly installed with a plurality of anti-skid rubber strips (1363).

5. The mold clamping and positioning structure according to claim 1, characterized in that: Three mold positioning guide rods (141) are fixedly mounted on the bottom of the two upper extension plates (14), and three mold positioning guide grooves (321) are provided on the two lower extension plates (32) that pass through the upper and lower molds. After the upper mold (11) and the lower mold (31) are combined, the three mold positioning guide rods (141) respectively pass through the three mold positioning guide grooves (321).

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