Metal forming die with replaceable die cavity

Abstract

The utility model discloses a metal forming die with a replaceable die cavity, which relates to the field of metal forming dies and comprises a base, a support rod is fixed at the top of the base, a movable plate is connected to the side surface of the support rod, and a top plate is fixed at the top of the support rod close to the movable plate; according to the metal forming die with the replaceable die cavity, the lower die can be detached and replaced after sliding out of the interior of the containing groove, workpieces in other shapes can be rapidly machined after the lower die is detached and replaced, the machining efficiency of the metal forming die is improved, and counter-acting force can be generated when a spring deforms; impact force generated when a machined part is stamped can be attenuated through counter-acting force, impact abrasion caused by die use can be reduced when the impact force is reduced, the service life of parts of the device is prolonged, and the impact force generated when the movable rod slides in the movable groove can be reduced when friction force is increased. And therefore, the impact force generated when the machined part is stamped is further reduced, and the use stability of the buffering mechanism is improved.

Description

Technical Field

[0001] The utility model relates to the technical field of metal forming dies, in particular to a metal forming die with a replaceable die cavity. Background Art

[0002] Metal forming dies are tools used to make metal products. They are usually made of metal or other materials, and are used to apply pressure or other processing methods to metal materials to form workpieces of specific shapes. They are widely used in the industrial field and are widely used.

[0003] In the prior art, a Chinese patent with the authorization announcement number CN214719900U discloses a stamping die with precise positioning and rapid die setting, which belongs to the field of metal forming dies. Its technical points include a lower die and an upper die located on a punch head. The upper surface of the upper die is provided with a positioning pin, and the lower surface of the punch head is provided with a positioning hole that matches the positioning pin. The positioning pin is located on the center line of the upper die, and a sliding hole is provided on the upper surface of the upper die. A floating spring for floating the positioning pin up and down is provided between the lower surface of the positioning pin and the bottom surface of the sliding hole. The entire die uses the floating spring to drive the positioning pin to reset during assembly. When the alignment is accurate, the sound of the positioning pin resetting and the positioning hole can be used as a reminder, and it can also play a role in precise positioning at the initial stage of assembly, reducing the number of calibration times for die installation. During the stamping process, the positioning pin is always located in the positioning hole to play a positioning role, which can also ensure production quality.

[0004] At present, most molding molds on the market still have certain shortcomings when they are used. As shown in the above-mentioned document, the device uses a floating spring to drive the positioning pin to reset. When the alignment is accurate, the impact sound of the positioning pin reset and the positioning hole can be used as a prompt. It is convenient to use, but a mold can usually only produce one type. When the mold cavity needs to be replaced, the operation is troublesome and time-consuming. Secondly, the stamping of the device does not have a good buffer function. Long-term vibration use is easy to cause wear of parts, which is troublesome to use. Utility Model Content

[0005] The utility model aims to provide a metal forming mold with a replaceable mold cavity, so as to solve the problems in the above background technology that the metal forming mold is inconvenient to replace the mold cavity, the device has no buffering function, and the parts are greatly worn during processing.

[0006] To achieve the above object, the utility model provides the following technical solution: a metal forming mold with a replaceable mold cavity, comprising a base, a support rod is fixed on the top of the base, a movable plate is connected to the side of the support rod, and a top plate is fixed on the top of the support rod near the movable plate;

[0007] The top of the base and the bottom of the movable plate are both provided with a placement groove, and a disassembly and assembly mechanism for replacing the mold cavity is arranged inside the placement groove, and the disassembly and assembly mechanism includes a fixed block, and the fixed block is symmetrically fixed inside the placement groove, the placement groove at the top of the base is connected to the lower mold, and the placement groove at the bottom of the movable plate is connected to the upper mold, and the bottoms of the lower mold and the upper mold are both provided with a positioning groove, and the bottoms of the lower mold and the upper mold away from the positioning groove are provided with an extrusion groove, and the side of the base and the movable plate are both provided with a rotating groove, and a bidirectional threaded rod is rotated through the inside of the rotating groove, and the surface of the bidirectional threaded rod is threadedly connected with an extrusion block, and the extrusion block slides inside the sliding groove, and the sliding groove is penetrated and opened on the side of the rotating groove;

[0008] The top of the lower die is symmetrically provided with telescopic grooves, and a buffer mechanism for reducing the impact strength of the movable plate is arranged inside the lower die.

[0009] Furthermore, the fixing block is slidably connected to the positioning groove, the extrusion groove is snap-fitted to the extrusion block, and the bidirectional threaded rod is threadedly connected to the extrusion block.

[0010] Furthermore, the buffer mechanism includes a movable groove, and the movable groove is symmetrically arranged at the bottom of the telescopic groove, a movable rod slides through the movable groove, and a fixing plate is fixed on the top of the movable rod.

[0011] Furthermore, a rubber pad is connected to the top of the fixed plate, a spring is connected between the rubber pad and the telescopic slot, a limiting slot is opened on the side of the movable rod, a limiting block is slidable inside the limiting slot, and the limiting block is fixed on the inner side of the movable slot.

[0012] Furthermore, the movable rod and the fixed plate are an integrated structure, the fixed plate forms a telescopic structure through a spring and a telescopic slot, the limit slot and the limit block are slidably connected, and a friction mechanism is arranged inside the movable rod to improve the effect of the buffer mechanism.

[0013] Furthermore, the friction mechanism includes a placement groove, which is opened on the side of the movable rod, a friction pad is connected inside the placement groove, an extrusion airbag is connected to the bottom of the movable groove, and a connecting pipe is connected between the friction pad and the extrusion airbag.

[0014] Compared with the prior art, the beneficial effects of the utility model are:

[0015] 1. The metal forming mold with replaceable mold cavity can be disassembled and replaced after the lower mold slides out of the placement groove. After the lower mold is disassembled and replaced, workpieces of other shapes can be quickly processed, thereby improving the processing efficiency of the metal forming mold. The spring can generate a reaction force when it is deformed, and the reaction force can attenuate the impact force generated when the workpiece is stamped. When the impact force is reduced, the impact wear caused by the use of the mold can be reduced, thereby improving the service life of the device parts. When the friction force increases, the impact force of the movable rod when it slides inside the movable groove can be reduced, thereby further reducing the impact force generated when the workpiece is stamped, and improving the stability of the buffer mechanism;

[0016] 2. A bidirectional threaded rod is provided, through which the two extrusion blocks can be driven to slide at the same time. The operation is quick and simple, and the threaded structure is highly stable and not prone to gap shaking;

[0017] 3. A rubber pad is provided to prevent the wear of the mold parts caused by the workpiece. The rubber pad improves the protection of the mold parts and increases the service life of the device in disguise;

[0018] 4. A spring is provided, and the reaction force generated by the deformation of the spring can attenuate the impact force generated during the workpiece processing, thereby improving the protection effect during the mold processing and reducing component wear;

[0019] 5. It is provided with a device that can attenuate the elastic vibration generated by the deformation of the spring, thereby achieving stable movement of the movable rod, thereby improving the stability of the use of the buffer mechanism. BRIEF DESCRIPTION OF THE DRAWINGS

[0020] Figure 1 This is a schematic diagram of the overall three-dimensional structure of the utility model when viewed from above;

[0021] Figure 2 This is a schematic diagram of the overall three-dimensional structure of the utility model from top view;

[0022] Figure 3 This is an enlarged three-dimensional structural diagram of the fixing block of the utility model;

[0023] Figure 4 This is a schematic diagram of the cutaway three-dimensional structure of the lower mold of the utility model;

[0024] Figure 5 This is an enlarged three-dimensional structural diagram of the rubber pad of the utility model;

[0025] Figure 6 It is a schematic diagram of the cutaway three-dimensional structure of the movable rod of the utility model.

[0026] In the figure: 1. base; 2. support rod; 3. movable plate; 4. top plate; 101. placement groove; 102. fixed block; 103. lower die; 104. positioning groove; 105. extrusion groove; 106. rotation groove; 107. two-way threaded rod; 108. extrusion block; 109. sliding groove; 110. telescopic groove; 111. movable groove; 112. movable rod; 113. fixed plate; 114. rubber pad; 115. spring; 116. limit groove; 117. limit block; 118. placement groove; 119. friction pad; 120. extrusion airbag; 121. connecting pipe; 122. upper die. DETAILED DESCRIPTION

[0027] 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.

[0028] Embodiment 1: Figure 1-Figure 4 The technical solution shown in the figure, the present invention provides the following technical solution: In order to solve the problem that it is inconvenient to replace the mold cavity as needed after the molding mold is used, thereby affecting the workpiece processing efficiency, a disassembly and assembly mechanism is disclosed:

[0029] The present invention comprises a base 1, a support rod 2 is fixed on the top of the base 1, a movable plate 3 is connected to the side of the support rod 2, a top plate 4 is fixed to the top of the support rod 2 near the movable plate 3, a placement groove 101 is provided on the top of the base 1 and the bottom of the movable plate 3, a disassembly mechanism for replacing the mold cavity is arranged inside the placement groove 101, and the disassembly mechanism comprises a fixing block 102, the fixing block 102 is symmetrically fixed inside the placement groove 101, a lower mold 103 is connected inside the placement groove 101 at the top of the base 1, an upper mold 122 is connected inside the placement groove 101 at the bottom of the movable plate 3, a positioning groove 104 is provided at the bottom of the lower mold 103 and the upper mold 122, and the lower mold 103 and the upper mold 122 are both far away from the positioning groove 104. The bottom of the lower die 103 is provided with an extrusion groove 105, the side of the base 1 and the movable plate 3 is provided with a rotation groove 106, the inside of the rotation groove 106 is penetrated and rotated with a bidirectional threaded rod 107, the surface of the bidirectional threaded rod 107 is threadedly connected with an extrusion block 108, the extrusion block 108 slides inside the sliding groove 109, the sliding groove 109 is penetrated and opened on the side of the rotation groove 106, the top of the lower die 103 is symmetrically provided with a telescopic groove 110, the lower die 103 is provided with a buffer mechanism for reducing the impact strength of the movable plate 3, the fixed block 102 is slidably connected with the positioning groove 104, the extrusion groove 105 and the extrusion block 108 are snap-fitted, and the bidirectional threaded rod 107 and the extrusion block 108 are threadedly connected;

[0030] When the metal forming mold needs to replace the mold cavity, the bidirectional threaded rod 107 can be rotated through the rotating groove 106. When the bidirectional threaded rod 107 rotates, it can drive the extrusion block 108 to slide threadedly. When the extrusion block 108 slides threadedly, it can slide through the sliding groove 109 and the extrusion groove 105. After the extrusion block 108 slides to a certain position, the lower mold 103 is lifted upward. When the lower mold 103 is lifted, the positioning groove 104 and the extrusion groove 105 can be driven to move. When the extrusion groove 105 moves, it can slide through the extrusion block 108. When the positioning groove 104 moves, it can slide through the fixed block 102. After the lower mold 103 slides out of the placement groove 101, it can be disassembled and replaced. After the lower mold 103 is disassembled and replaced, workpieces of other shapes can be quickly processed, thereby improving the processing efficiency of the metal forming mold.

[0031] Embodiment 2: Figure 2 and Figure 5 The technical solution shown in the figure, the present invention provides the following technical solution: In order to solve the problem that the forming die will vibrate when punching the workpiece, which is easy to accelerate the wear of the die parts, a buffer mechanism is disclosed:

[0032] The buffer mechanism includes a movable groove 111, and the movable groove 111 is symmetrically arranged at the bottom of the telescopic groove 110, a movable rod 112 slides through the movable groove 111, a fixed plate 113 is fixed on the top of the movable rod 112, a rubber pad 114 is connected to the top of the fixed plate 113, a spring 115 is connected between the rubber pad 114 and the telescopic groove 110, a limiting groove 116 is arranged on the side of the movable rod 112, a limiting block 117 is slidably arranged inside the limiting groove 116, and the limiting block 117 is fixed to the inner side of the movable groove 111, the movable rod 112 and the fixed plate 113 are an integral structure, the fixed plate 113 forms a telescopic structure with the telescopic groove 110 through the spring 115, the limiting groove 116 and the limiting block 117 are slidably connected, and a friction mechanism is arranged inside the movable rod 112 to improve the effect of the buffer mechanism. When the metal forming mold is used, the workpiece can be placed on the surface of the rubber pad 114, and then the movable plate 3 can move downward and pass through the upper mold 122 to The workpiece is stamped and formed, and the upper die 122 can be extruded when it moves down to the top of the workpiece. When the workpiece is extruded, the rubber pad 114 can be extruded. When the rubber pad 114 is extruded, the fixed plate 113 can drive the movable rod 112 to move. When the movable rod 112 moves, it can slide through the movable groove 111. At the same time, when the movable rod 112 moves, it can drive the limit groove 116 to move. When the limit groove 116 moves, it can slide through the limit block 117. When the movable rod 112 slides, it can drive the fixed plate 113 to slide. When the fixed plate 113 slides, it can squeeze the spring 115 through the telescopic groove 110. When the spring 115 is extruded, it can be deformed by its own material. When the spring 115 is deformed, a reaction force can be generated. The reaction force can attenuate the impact force generated when the workpiece is stamped. When the impact force is reduced, the impact wear caused by the use of the mold can be reduced, thereby improving the service life of the device parts.

[0033] Embodiment 3: Figure 1 , Figure 2 , Figure 5 ,and Figure 6 The technical solution shown in the figure, the present invention provides the following technical solution: In order to solve the problem that the buffer mechanism of the molding die is unstable and easy to shake during use, on the basis of the second embodiment, a friction mechanism is disclosed:

[0034] The friction mechanism includes a placement groove 118, which is opened on the side of the movable rod 112. A friction pad 119 is connected to the inside of the placement groove 118. The bottom of the movable groove 111 is connected to an extrusion airbag 120. A connecting pipe 121 is connected between the friction pad 119 and the extrusion airbag 120. When the buffer mechanism of the metal forming mold is used, the movable rod 112 can slide through the movable groove 111. When the movable rod 112 slides to the top of the movable groove 111, it can be squeezed. When the extrusion airbag 120 is squeezed, it can be deformed by its own material. When the extrusion airbag 120 is deformed, the internal gas can be squeezed out. The gas is transported to the interior of the friction pad 119 through the connecting pipe 121, and the friction pad 119 can expand inside the mounting groove 118 through the transported gas. When the friction pad 119 expands to the side wall of the movable groove 111, it can be squeezed. When the friction pad 119 is squeezed, the friction force with the movable groove 111 can be increased. When the friction force increases, the impact force of the movable rod 112 when sliding inside the movable groove 111 can be reduced, thereby further reducing the impact force generated when the workpiece is stamped. At the same time, the friction force of the friction pad 119 can also attenuate the elastic vibration generated when the spring 115 is deformed and reset, thereby improving the stability of the buffer mechanism.

[0035] Although the present invention has been described in detail with reference to the aforementioned embodiments, it is still possible for those skilled in the art to modify the technical solutions described in the aforementioned embodiments, or to make equivalent substitutions for some of the technical features therein. Any modifications, equivalent substitutions, improvements, etc. made within the spirit and principles of the present invention should be included in the protection scope of the present invention.

Claims

1. A metal forming mold with a replaceable mold cavity, comprising a base (1), a support rod (2) fixed on the top of the base (1), a movable plate (3) connected to the side of the support rod (2), and a top plate (4) fixed on the top of the support rod (2) near the movable plate (3), characterized in that ； The top of the base (1) and the bottom of the movable plate (3) are both provided with a placement groove (101), and a disassembly and assembly mechanism for replacing the mold cavity is arranged inside the placement groove (101), and the fixing block (102) is symmetrically fixed inside the placement groove (101), and the placement groove (101) at the top of the base (1) is connected to a lower mold (103), and the placement groove (101) at the bottom of the movable plate (3) is connected to an upper mold (122), and the bottoms of the lower mold (103) and the upper mold (122) are both provided with A positioning groove (104), the bottoms of the lower mold (103) and the upper mold (122) away from the positioning groove (104) are both provided with an extrusion groove (105), the sides of the base (1) and the movable plate (3) are both provided with a rotation groove (106), a bidirectional threaded rod (107) is rotatably passed through the inside of the rotation groove (106), an extrusion block (108) is threadedly connected to the surface of the bidirectional threaded rod (107), the extrusion block (108) slides inside a sliding groove (109), and the sliding groove (109) is passed through and provided on the side of the rotation groove (106); The top of the lower die (103) is symmetrically provided with telescopic grooves (110), and a buffer mechanism for reducing the impact strength of the movable plate (3) is provided inside the lower die (103).

2. A metal forming mold with replaceable mold cavity according to claim 1, characterized in that: The fixing block (102) and the positioning groove (104) are slidably connected, the extrusion groove (105) and the extrusion block (108) are snap-fitted connected, and the bidirectional threaded rod (107) and the extrusion block (108) are threadedly connected.

3. The metal forming mold with replaceable mold cavity according to claim 1, characterized in that: The buffer mechanism comprises a movable groove (111), and the movable groove (111) is symmetrically arranged at the bottom of the telescopic groove (110), a movable rod (112) slides through the movable groove (111), and a fixing plate (113) is fixed to the top of the movable rod (112).

4. A metal forming mold with replaceable mold cavity according to claim 3, characterized in that: A rubber pad (114) is connected to the top of the fixed plate (113), a spring (115) is connected between the rubber pad (114) and the telescopic slot (110), a limiting slot (116) is provided on the side of the movable rod (112), a limiting block (117) is slidable inside the limiting slot (116), and the limiting block (117) is fixed inside the movable slot (111).

5. The metal forming mold with replaceable mold cavity according to claim 4, characterized in that: The movable rod (112) and the fixed plate (113) are an integral structure; the fixed plate (113) forms a telescopic structure with the telescopic slot (110) via a spring (115); the limit slot (116) and the limit block (117) are slidably connected; and a friction mechanism is provided inside the movable rod (112) to improve the effect of the buffer mechanism.

6. A metal forming mold with replaceable mold cavity according to claim 5, characterized in that: The friction mechanism comprises a placement groove (118), the placement groove (118) being opened on the side of the movable rod (112), a friction pad (119) being connected inside the placement groove (118), an extrusion airbag (120) being connected to the bottom inside the movable groove (111), and a connecting pipe (121) being connected between the friction pad (119) and the extrusion airbag (120).

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