Secondary forming die for rubber electroplating metal composite accessory

Abstract

The utility model relates to a secondary forming mold for a rubber electroplating metal composite accessory, and relates to the field of forming molds, the secondary forming mold comprises an outer mold, an inner mold and a copper-plated sleeve, a through hole is formed in the outer mold, the inner mold is connected to a driving mechanism, the inner mold is used for reciprocating in the linear direction and is inserted into the through hole of the outer mold, and the copper-plated sleeve is arranged on the outer surface of the inner mold in a sleeving mode; the copper-plated sleeve is soft in texture and is used for being in contact with a workpiece. The die has the effect of reducing the probability that the die scratches the surface of a workpiece.

Description

TECHNICAL FIELD

[0001] The present application relates to the field of forming molds, in particular to a secondary forming mold for rubber electroplated metal composite fittings. BACKGROUND

[0002] The rubber electroplating process is a forming process for setting metal on the surface of rubber material. Through electroplating, the electrolytic deposition of metal forms a layered structure on the surface of rubber, which is stably connected with the rubber, thereby improving the surface hardness, strength, wear resistance and other properties of the rubber workpiece.

[0003] The existing rubber and electroplated metal combined workpiece has poor size accuracy after production is completed, and the surface is uneven, so a mold is used to laminate the metal layer on the surface of the rubber workpiece. The workpiece is in a cylindrical structure, the secondary forming mold includes an outer mold and an inner mold, a through hole is formed on the outer mold, the workpiece is placed in the through hole, the inner mold is inserted into the inner wall of the workpiece, and the inner mold and the outer mold jointly extrude the workpiece, so that the workpiece has better surface quality and size accuracy.

[0004] The related technical solutions in the above have the following defects: the hardness and strength of the metal layer on the surface of the mold and the workpiece are large, and the mold is easy to scratch the metal electroplating layer on the surface of the workpiece when they are in contact with each other, resulting in poor production quality of the workpiece. Content of the utility model

[0005] In order to reduce the probability of the mold scratching the surface of the workpiece, the present application provides a secondary forming mold for rubber electroplated metal composite fittings.

[0006] The secondary forming mold for rubber electroplated metal composite fittings provided by the present application adopts the following technical solution:

[0007] A secondary forming mold for rubber electroplated metal composite fittings, comprising an outer mold, an inner mold and a copper-plated sleeve, a through hole is formed on the outer mold, the inner mold is connected to a driving mechanism, the inner mold is used to reciprocate along a straight line and is inserted into the through hole of the outer mold, the copper-plated sleeve is sleeved on the outer surface of the inner mold, the copper-plated sleeve is relatively soft, and the copper-plated sleeve is used to contact the workpiece.

[0008] By adopting the above technical solution, when the inner mold is inserted into the outer mold, the copper-plated sleeve contacts the workpiece, the copper-plated sleeve is made of copper material with relatively soft texture, and when the copper-plated sleeve transmits stress, it can produce large deformation, so that the mold and the surface of the workpiece remain flat, the surface quality of the formed workpiece can be improved, and the probability of the mold scratching the workpiece is reduced.

[0009] Optionally, the outer mold comprises two half molds, the half molds abut each other to form the outer mold, an arc-shaped groove is formed on the half mold, the cross section of the arc-shaped groove is semicircular, and when the two half molds abut, the two arc-shaped grooves form a circular hole.

[0010] By adopting the technical scheme, the two half molds are spliced to form the outer mold, and after the workpiece is processed, the user can disassemble the half mold to facilitate taking out the workpiece in the outer mold, thereby improving work efficiency.

[0011] Optionally, a plurality of connecting holes are formed on the outer mold, the connecting holes penetrate the outer mold, and the connecting holes are used to arrange bolts.

[0012] By adopting the technical scheme, the plurality of connecting holes are formed on the outer mold, so that the outer mold can be fixed on the workbench through the bolts, thereby facilitating detachable connection of the outer mold on different machines for workpiece pressing.

[0013] Optionally, the inner mold is a cylindrical structure, and a convex edge is formed on one side end face of the inner mold.

[0014] By adopting the technical scheme, the convex edge is arranged on the inner mold, the copper-plated sleeve can be sleeved on the inner mold by the user, the convex edge supports the copper-plated sleeve, and when the inner mold is inserted into the outer mold, the probability of slippage of the copper-plated sleeve on the inner mold is reduced.

[0015] Optionally, a sunken table is formed on the outer mold, the sunken table is coaxially arranged with the arc-shaped groove, and the sunken table is used for inserting the convex edge.

[0016] By adopting the technical scheme, the sunken table is formed on the outer mold, so that the inner surface of the sunken table and the convex edge jointly extrude the workpiece, thereby being capable of flattening the convex table on the workpiece, and facilitating the user to process workpieces of different shapes and cylinders.

[0017] Optionally, a chamfer is formed on one side of the inner mold away from the convex edge.

[0018] By adopting the technical scheme, the chamfer is formed on the inner mold, so that the diameter on the chamfer end face is smaller than the middle diameter of the inner mold, when the inner wall of the through hole of the workpiece is uneven, the inner mold can be inserted into the through hole of the workpiece and vertically fall, so that the inner wall of the through hole of the workpiece is flattened, the processing purpose is achieved, the stress on the workpiece is reduced, and the probability of damage to the workpiece is reduced.

[0019] Optionally, the copper-plated sleeve comprises an inner layer sleeve and an outer layer sleeve, the inner layer sleeve is sleeved on the inner mold, and the outer layer sleeve is inserted into the arc-shaped groove of the outer mold.

[0020] By adopting the technical scheme, the copper-plated sleeve is arranged on the inner mold and the outer mold, when the inner surface and the outer surface of the workpiece are both provided with a metal plating layer, there is a probability that the inner mold and the outer mold are scratched and damaged during the workpiece processing and forming process, the copper-plated sleeve arranged on the inner side and the outer side of the workpiece can reduce the probability of scratching and damaging the surface of the inner mold and the outer mold during the processing and forming.

[0021] Optionally, the outer layer sleeve is formed by splicing two half cylinders.

[0022] By adopting the technical scheme, the half cylinder can be detached from the workpiece after the user detaches the half mold, so that the user can take out the workpiece after machining from the mold.

[0023] To sum up, the beneficial technical effects of the present application are:

[0024] 1. By sleeving the copper-plated sleeve on the inner mold, the copper-plated sleeve contacts the workpiece when the inner mold is inserted into the outer mold, the copper-plated sleeve is made of soft copper material, and when the copper-plated sleeve transmits stress, it can produce large deformation, so that the surface of the mold and the workpiece is kept flat, the surface quality of the workpiece after forming can be improved, and the probability of the mold scratching the workpiece is reduced;

[0025] 2. By providing the convex edge on the inner mold, the user can sleeve the copper-plated sleeve on the inner mold, the convex edge supports the copper-plated sleeve, and when the inner mold is inserted into the outer mold, the probability of the copper-plated sleeve slipping on the inner mold is reduced;

[0026] 3. By opening the chamfer on the inner mold, the diameter of the chamfer end face is smaller than the diameter of the middle part of the inner mold, when the inner wall of the through hole of the workpiece is uneven, the inner mold can be inserted into the through hole of the workpiece and vertically fall, so that the inner wall of the through hole of the workpiece is flattened, the machining purpose is achieved, the stress on the workpiece is reduced, and the probability of damage to the workpiece is reduced. BRIEF DESCRIPTION OF DRAWINGS

[0027] Figure 1 is the overall structure of the embodiment of the present application Figure 1 .

[0028] Figure 2 is the overall structure of the embodiment of the present application Figure 2 .

[0029] Figure 3 is a structure diagram of a half mold of the embodiment of the present application.

[0030] Figure 4 is a position diagram of the copper-plated sleeve and the inner mold of the embodiment of the present application.

[0031] Figure 5 is the overall cross-sectional view of the embodiment of the present application.

[0032] Reference signs: 1, outer mold; 11, half mold; 12, arc-shaped groove; 121, sink; 13, connecting hole; 2, inner mold; 21, convex edge; 22, chamfer; 3, copper-plated sleeve; 31, inner layer sleeve; 32, outer layer sleeve; 4, workpiece; 41, boss. DETAILED DESCRIPTION

[0033] The present application will be further described in detail below with reference to the accompanying drawings.

[0034] The embodiment of the application discloses a secondary forming die for combining rubber and electroplated metal accessories, referring to Figure 1 , Figure 2 and Figure 3 , comprising an outer die 1, an inner die 2 and a copper-plated sleeve 3, the outer die 1 is provided with a through hole, the inner die 2 is in a cylindrical structure, and the copper-plated sleeve 3 is sleeved on the outer side wall of the inner die 2. The user fixes the outer die 1 on a workbench, so that the through hole on the outer die 1 is vertically provided, and then the rubber workpiece 4 is placed in the through hole. The inner die 2 is vertically inserted into the through hole of the outer die 1 by a hydraulic cylinder, so that the inner die 2 and the outer die 1 can jointly extrude the rubber workpiece 4, and the size precision of the rubber workpiece 4 is better. During the processing, the rubber workpiece 4 is formed with an electroplated layer on the outer side, and the surface hardness and strength of the rubber workpiece 4 are higher. When the inner die 2 and the outer die 1 extrude the rubber workpiece 4, the electroplated layer of the rubber workpiece 4 is easy to scratch the surface of the inner die 2. The copper-plated sleeve 3 is sleeved on the surface of the inner die 2, so that the copper-plated sleeve 3 is in contact with the electroplated layer of the rubber workpiece 4, and then scratches are generated on the surface of the copper-plated sleeve 3. The copper-plated sleeve 3 is made of copper material and has lower hardness and strength, and is easy to deform. The user can regularly remove the copper-plated sleeve 3 and reprocess, so that the copper-plated sleeve 3 can protect the inner die 2.

[0035] Referring to Figure 2 and Figure 3 , the outer die 1 comprises two half dies 11, the half die 11 is in a cubic structure, and the two half dies 11 are jointly combined into the outer die 1. An arc-shaped groove 12 is formed in the side wall of the half die 11, and the cross section of the arc-shaped groove 12 is in a semicircular shape. When the two half dies 11 are combined, the two arc-shaped grooves 12 jointly form a circular hole. After the workpiece 4 is processed and shaped, the user can conveniently and quickly take out the workpiece 4 by disassembling the two half dies 11.

[0036] Referring to Figure 4 , Figure 5 and Figure 3 , a sunken platform 121 is formed in the outer die 1, and the sunken platform 121 is coaxially arranged with the arc-shaped groove 12. A convex edge 21 is arranged on one side of the end face of the inner die 2. When the inner die 2 is inserted into the arc-shaped groove 12 of the outer die 1, the convex edge 21 is inserted into the sunken platform 121, so that a convex platform 41 is formed on the workpiece 4. A chamfer 22 is formed on the side of the inner die 2 away from the convex edge 21. The diameter of the end face of the inner die 2 is smaller than the diameter of the middle part of the inner die 2. When the inner wall of the workpiece 4 is uneven, the inner die 2 can be inserted into the hole of the workpiece 4 and press the inner wall of the workpiece 4 flat.

[0037] Referring to Figure 3 , a plurality of connecting holes 13 are formed in the outer die 1, the connecting holes 13 penetrate through the outer die 1, and bolts are arranged in the connecting holes 13. The outer die 1 can be fixed on the workbench by the bolts.

[0038] Referring to Figure 4 and ​The copper plating sleeve 3 comprises an inner sleeve 31 and an outer sleeve 32, the inner sleeve 31 is sleeved on the inner mold 2, and the outer sleeve 32 is arranged in the outer mold 1. The inner sleeve 31 is in a cylindrical structure, the inner sleeve 31 is sleeved outside the inner mold 2, the outer sleeve 32 is in a cylindrical structure provided with a boss, the outer sleeve 32 is inserted into the arc-shaped groove 12 of the outer mold 1, the inner sleeve 31 is used for protecting the surface of the inner mold 2, and the outer sleeve 32 is used for protecting the inner wall of the arc-shaped groove 12 of the outer mold 1. When the inner surface and the outer surface of the workpiece 4 are completed, the inner sleeve 31 and the outer sleeve 32 are respectively in contact with the surface of the workpiece 4, so that the abrasion between the workpiece 4 and the outer mold 1 and the inner mold 2 can be reduced. In other embodiments, the outer sleeve 32 can be provided as two semicircular sleeves, the two semicircular sleeves are jointly formed into a cylindrical structure, and the two semicircular sleeves are arranged in the two arc-shaped grooves 12 respectively. When the workpiece 4 is completed, the two semicircular sleeves can be disconnected by removing the outer mold 1, so that the user can take down the workpiece 4 from the mold after the workpiece 4 is completed.

[0039] The implementation principle of the embodiment of the application is that the copper plating sleeve 3 is arranged on the inner mold 2, the copper plating sleeve 3 is attached to the outer side wall of the inner mold 2, when the inner mold 2 is inserted into the workpiece 4, the workpiece 4 is in abutment with the copper plating sleeve 3, the copper plating sleeve 3 is soft in texture, can protect the inner mold 2 and the workpiece 4, reduce the probability of scratches and abrasion on the surfaces of the inner mold 2 and the workpiece 4, and achieve the effect of protecting the workpiece 4.

[0040] The above are preferred embodiments of the application, and are not intended to limit the protection scope of the application, therefore: any equivalent changes made according to the structure, shape and principle of the application should be covered within the protection scope of the application.

Claims

1. A secondary molding die for a rubber-plated metal composite fitting, characterized by: The application relates to a copper-plated sleeve for a mold, which comprises an outer mold (1), an inner mold (2) and a copper-plated sleeve (3), a through hole is formed in the outer mold (1), the inner mold (2) is connected to a driving mechanism, the inner mold (2) is used for reciprocating movement in a straight line direction and is inserted into the through hole of the outer mold (1), the copper-plated sleeve (3) is sleeved on the outer surface of the inner mold (2), the copper-plated sleeve (3) is soft in texture, and the copper-plated sleeve (3) is used for contacting a workpiece.

2. The overmolding mold for a rubber metal-plated composite fitting according to claim 1, characterized by: The outer mold (1) comprises two half molds (11), the half molds (11) abut against each other to form the outer mold (1), arc-shaped grooves (12) are formed in the half molds (11), the cross section of the arc-shaped grooves (12) is semicircular, and the two arc-shaped grooves (12) form a circular hole when the two half molds (11) abut against each other.

3. The overmolding mold for rubber metal-plated composite parts according to claim 1, characterized in that: A plurality of connecting holes (13) are formed in the outer mold (1), the connecting holes (13) penetrate through the outer mold (1), and the connecting holes (13) are used for arranging bolts.

4. The overmolding mold for rubber metal-plated composite parts according to claim 1, characterized in that: The inner mold (2) is in a cylindrical structure, and a convex edge (21) is formed on one side end surface of the inner mold (2).

5. The overmolding mold for rubber metal-plated composite parts according to claim 4, characterized in that: A sunken platform (121) is formed in the outer mold (1), the sunken platform (121) is coaxially arranged with the arc-shaped groove (12), and the sunken platform (121) is used for inserting the convex edge (21).

6. A secondary molding die for rubber metal plated composite parts according to claim 5, characterized in that: A chamfer (22) is formed on the side of the inner mold (2) away from the convex edge (21).

7. The overmolding mold for rubber metal-plated composite parts according to claim 2, characterized in that: The copper-plated sleeve (3) comprises an inner layer sleeve (31) and an outer layer sleeve (32), the inner layer sleeve (31) is sleeved on the inner mold (2), and the outer layer sleeve (32) is inserted into the arc-shaped groove (12) of the outer mold (1).

8. The overmolding mold for rubber metal-plated composite parts according to claim 7, characterized in that: The outer layer sleeve (32) is formed by splicing two half cylinders.

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