A fixture for integrated potting of rubber gears

Abstract

The present invention discloses a fixture for integrated potting of rubber gears, comprising a cylindrical barrel, four gear blocks, a pressure cover, a centering rod, an upper support ring, and a lower support ring. In the present application, the center position of the pressure cover is aligned with the center position of the cylindrical barrel, and the position of the centering rod is confirmed by the pressure cover to realize the centering function of the potting fixture; the upper support ring and the lower support ring can ensure that sufficient support force is provided for the gear block during the potting process, ensure that the position of the gear block does not change during the potting process, and realize the positioning function during the potting process of the rubber gear; the inner chamfer design of the gear block edge makes the contact surface between the gear blocks as small as possible, and the interaction force between the gear blocks is reduced, so that it is convenient to remove the gear block during demoulding without damaging the rubber gear.

Description

Technical Field

[0001] The invention relates to the technical field of rubber gear manufacturing, and in particular to a clamp used for integral potting of rubber gears. Background Art

[0002] When conducting equivalent design research on high-speed impact structural fragments, in order to ensure that the collision process between the primary impact projectile and the impact section of the structural fragments is smooth and the two can be tightly combined after the collision, a rubber gear is designed at the rear section of the impact section, and the deformation of the rubber during the impact is used to achieve a tight combination of the primary impact projectile and the impact section of the structural fragments.

[0003] Rubber gears are generally made by integral potting. To ensure that the size and position of the rubber gears meet the requirements after potting, the fixture should be able to provide sufficient support during the potting process to ensure that the position does not change during potting. In addition, the fixture should be easy to peel off after potting to avoid damage to the rubber gear during the peeling process. However, the fixtures used for integral potting of rubber gears in the prior art generally cannot do this.

[0004] Therefore, it is necessary to develop a fixture for integrally potting rubber gears to solve the above problems. Summary of the invention

[0005] The purpose of the present invention is to design a fixture for integral potting of rubber gears in order to solve the above problems.

[0006] The present invention achieves the above-mentioned purpose through the following technical solutions:

[0007] A fixture for integral potting of rubber gears, comprising:

[0008] A cylindrical tube; a first end of the cylindrical tube is provided with an opening;

[0009] Four gear blocks; the four gear blocks form a cylindrical ring structure, and the outer wall of the cylindrical ring structure is in the shape of a gear; the cylindrical ring structure is installed in the cylindrical barrel, the first end of the cylindrical ring structure is flush with the first end of the cylindrical barrel, and the second end of the cylindrical ring structure is tightly attached to the inner bottom of the second end of the cylindrical barrel; an annular casting space for casting the rubber gear is formed between the inner wall of the cylindrical barrel and the outer wall of the cylindrical ring structure;

[0010] A gland; a circular groove is provided at the first end of the gland, the diameter of the circular groove is slightly larger than the outer diameter of the cylindrical barrel, and a gland through hole is axially provided at the center of the gland; the gland is sleeved on the first end of the cylindrical barrel through the circular groove;

[0011] Centering rod;

[0012] Upper support ring;

[0013] Lower support ring; the outer sides of the upper support ring and the lower support ring are connected to the inner side of the cylindrical ring structure; support ring through holes are provided at the centers of the upper support ring and the lower support ring; the outer diameter of the centering rod is slightly smaller than the diameter of the support ring through hole and the gland through hole, and the centering rod is provided through the support ring through hole and the gland through hole.

[0014] Specifically, the clamp also includes a nut and a handle; the handle is formed into a long strip structure, a handle through hole is arranged at the center of the handle, an external thread is arranged on the first end of the centering rod, the nut is threadedly connected to the first end of the centering rod, and the centering rod is arranged through the handle through hole. When the mold is removed, the handle is placed between the nut and the upper support ring.

[0015] Preferably, the outer side of the upper support ring is connected to the inner side wall of the first end of the cylindrical annular structure, and the outer side of the lower support ring is connected to the inner side wall of the second end of the cylindrical annular structure.

[0016] Preferably, the centering rod includes a first diameter section, a second diameter section, a third diameter section, and a fourth diameter section which are connected in sequence from larger to smaller in diameter, and the support ring through hole arranged at the center of the lower support ring includes a first through hole and a second through hole, the first through hole and the second through hole are connected in the axial direction, the diameter of the first through hole is larger than the diameter of the second through hole, the first diameter section is connected and cooperated with the first through hole, and the second diameter section is connected and cooperated with the second through hole; the third diameter section is used to connect and cooperate with the support ring through hole, the pressure cover through hole, and the handle through hole of the upper support ring; the fourth diameter section is used to connect and cooperate with the nut.

[0017] Preferably, an inner chamfer is provided at the inner edge of the gear block.

[0018] The beneficial effects of the present invention are:

[0019] The center position of the pressure cover is aligned with the center position of the cylindrical barrel, and the position of the centering rod is confirmed through the pressure cover to realize the centering function of the potting fixture; the upper support ring and the lower support ring can ensure that sufficient support force is provided for the gear block during the potting process to ensure that the position of the gear block does not change during the potting process, thereby realizing the positioning function during the potting process of the rubber gear; the inner chamfer design of the gear block edge makes the contact surface between the gear blocks as small as possible, and the interaction force between the gear blocks is reduced, so as to facilitate the removal of the gear block during demoulding without damaging the rubber gear. BRIEF DESCRIPTION OF THE DRAWINGS

[0020] Figure 1 is the front view (partial cutaway) of the present application;

[0021] Figure 2 is a top view (partially cut away) of the present application;

[0022] Figure 3 is a top view of the rubber gear in this application;

[0023] Figure 4 is a top view of the upper support ring or the lower support ring in the present application;

[0024] Figure 5 is a side view (partial cross-section) of the upper support ring or the lower support ring in the present application;

[0025] Figure 6 It is the front view of the centering rod in this application;

[0026] Figure 7 : is a schematic diagram of the structure of the handle in the present application, wherein A is a top view; B is a side view (partial cross-section);

[0027] Figure 8 : is a schematic diagram of the structure of the gland in the present application, wherein A is a top view; B is a side view (partial cross-section);

[0028] Description of Reference Numerals

[0029] In the figure: 1-pressure cover; 11-pressure cover through hole; 12-protruding annular edge; 2-upper support ring; 21-support ring through hole; 3-nut; 4-handle; 41-handle through hole; 5-cylindrical tube; 6-rubber gear; 61-gear block; 7-lower support ring; 8-gear block; 9-centering rod; 91-first diameter section; 92-second diameter section; 93-third diameter section; 94-fourth diameter section. DETAILED DESCRIPTION

[0030] In order to make the purpose, technical solutions and advantages of the embodiments of the present invention clearer, the technical solutions in the embodiments of the present invention will be clearly and completely described below in conjunction with the drawings in the embodiments of the present invention. Obviously, the described embodiments are part of the embodiments of the present invention, not all of the embodiments. Generally, the components of the embodiments of the present invention described and shown in the drawings here can be arranged and designed in various different configurations.

[0031] Therefore, the following detailed description of the embodiments of the present invention provided in the accompanying drawings is not intended to limit the scope of the invention claimed for protection, but merely represents selected embodiments of the present invention. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the present invention.

[0032] It should be noted that similar reference numerals and letters denote similar items in the following drawings, and therefore, once an item is defined in one drawing, further definition and explanation thereof is not required in subsequent drawings.

[0033] In the description of the present invention, it should be understood that the terms "upper", "lower", "inside", "outside", "left", "right", etc. indicate directions or positional relationships based on the directions or positional relationships shown in the accompanying drawings, or are directions or positional relationships in which the product of the invention is usually placed when in use, or are directions or positional relationships commonly understood by those skilled in the art. These directions or positional relationships are only for the convenience of describing the present invention and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific direction, be constructed and operated in a specific direction, and therefore should not be understood as a limitation on the present invention.

[0034] Furthermore, the terms “first”, “second”, etc. are merely used for distinguishing descriptions and should not be understood as indicating or implying relative importance.

[0035] In the description of the present invention, it is also necessary to explain that, unless otherwise clearly specified and limited, the terms such as "setting" and "connection" should be understood in a broad sense. For example, "connection" can be a fixed connection, a detachable connection, or an integral connection; it can be a mechanical connection or an electrical connection; it can be a direct connection, or an indirect connection through an intermediate medium, or it can be the internal communication of two elements. For ordinary technicians in this field, the specific meanings of the above terms in the present invention can be understood according to specific circumstances.

[0036] The specific implementation modes of the present invention are described in detail below in conjunction with the accompanying drawings.

[0037] like Figure 1-8 As shown, a fixture for integrally potting a rubber gear 6 comprises:

[0038] The cylindrical tube 5; the first end of the cylindrical tube 5 is provided with an opening;

[0039] Four gear blocks 61; the four gear blocks 61 surround a cylindrical ring structure 8, and the outer wall of the cylindrical ring structure 8 is in the shape of a gear; the cylindrical ring structure 8 is installed in the cylindrical barrel 5, the first end of the cylindrical ring structure 8 is flush with the first end of the cylindrical barrel 5, and the second end of the cylindrical ring structure 8 is in close contact with the inner bottom of the second end of the cylindrical barrel 5; an annular casting space for casting the rubber gear 6 is formed between the inner wall of the cylindrical barrel 5 and the outer wall of the cylindrical ring structure 8;

[0040] The gland 1; the first end of the gland is provided with a protruding annular edge 12, a circular groove is formed in the protruding annular edge 12, the diameter of the circular groove is slightly larger than the outer diameter of the cylindrical barrel 5, and a gland 1 through hole 11 is axially provided at the center of the gland 1; the gland 1 is sleeved on the first end of the cylindrical barrel 5 through the circular groove;

[0041] Centering rod 9;

[0042] Upper support ring 2;

[0043] Lower support ring; the outer side of the upper support ring 2 is connected to the inner side wall of the first end of the cylindrical ring structure 8, and the outer side of the lower support ring is connected to the inner side wall of the second end of the cylindrical ring structure 8; a support ring through hole 21 is provided at the center of the upper support ring 2 and the lower support ring; the outer diameter of the centering rod 9 is slightly smaller than the diameter of the support ring through hole 21 and the through hole 11 of the pressure cover 1, and the centering rod 9 is provided through the support ring through hole 21 and the through hole 11 of the pressure cover 1.

[0044] like Figure 1 and 7 As shown, the clamp also includes a nut 3 and a handle 4; the handle 4 is formed into a long strip structure, a handle through hole 41 is arranged at the center of the handle 4, an external thread is arranged on the first end of the centering rod 9, the nut 3 is threadedly connected to the first end of the centering rod 9, and the centering rod 9 is arranged through the handle through hole 41. When the mold is removed, the handle 4 is placed between the nut 3 and the upper support ring 2.

[0045] like Figure 1 and 6 As shown, the centering rod 9 is designed to be in a four-section stepped shape from bottom to top, and the centering rod 9 includes a first diameter section 91, a second diameter section 92, a third diameter section 93, and a fourth diameter section 94 which are connected in order from large to small in diameter. The support ring through hole 21 arranged at the center of the lower support ring includes a first through hole and a second through hole. The first through hole and the second through hole are connected in the axial direction. The diameter of the first through hole is larger than the diameter of the second through hole. The first diameter section 91 is connected and matched with the first through hole, and the second diameter section 92 is connected and matched with the second through hole; the third diameter section 93 is used to connect and match with the support ring through hole 21 of the upper support ring 2, the through hole 11 of the pressure cover 1, and the handle through hole 41; the fourth diameter section 94 is used to connect and match with the nut 3.

[0046] like Figure 3 As shown, under normal circumstances, the four gear blocks 61 will be squeezed inward by the rubber pressure during the potting process, making it difficult to remove the gear blocks 61 smoothly after the potting is completed. In order to solve this problem, an inner chamfer is set at the inner edge of the gear block 61. The inner chamfer design of the edge of the gear block 61 makes the contact surface between the gear blocks 61 as small as possible, and the interaction force between the gear blocks 61 is reduced, thereby facilitating the removal of the gear blocks 61.

[0047] In some embodiments, the inner dimension of each gear block 61 is 1 / 4 arc.

[0048] During operation, four gear blocks 61 are sequentially placed into the cylindrical tube 5 and assembled into a cylindrical ring structure 8, and then the centering rod 9, the lower support ring, the upper support ring 2, and the pressure cover 1 are sequentially placed. The centering rod 9 is adjusted to the center position of the cylindrical tube 5 by the cooperation between the pressure cover 1 and the outer circle of the cylindrical tube 5, and then the positions of the lower support ring and the upper support ring 2 are adjusted, and finally the position adjustment of the cylindrical ring structure 8 is achieved, and the thickness of each part of the annular casting space is uniform. Then remove the pressure cover 1, prepare the glue, and fill it into the annular casting space. After filling, the pressure cover 1 can be added for compaction, or the pressure cover 1 can be omitted; then enter the demoulding step, install the handle 4 and the nut, lift the upper support ring 2, the centering rod 9 and the lower support ring together through the handle 4, then remove the four gear blocks 61, and then take out the rubber gear 6.

[0049] The above are only preferred embodiments of the present invention. It should be pointed out that, for ordinary technicians in this technical field, several improvements and modifications can be made without departing from the technical principles of the present invention. These improvements and modifications should also be regarded as within the scope of protection of the present invention.

Claims

1. A fixture for integral potting of rubber gears, characterized in that: include: Cylindrical barrel; The first end of the cylindrical barrel is provided with an opening; four gear blocks; The four gear blocks form a cylindrical ring structure, and the outer wall of the cylindrical ring structure is in the shape of a gear; the cylindrical ring structure is installed in the cylindrical barrel, the first end of the cylindrical ring structure is flush with the first end of the cylindrical barrel, and the second end of the cylindrical ring structure is tightly attached to the inner bottom of the second end of the cylindrical barrel; an annular casting space for casting the rubber gear is formed between the inner wall of the cylindrical barrel and the outer wall of the cylindrical ring structure; an inner chamfer is provided at the inner edge of the gear block; A gland; a circular groove is provided at the first end of the gland, the diameter of the circular groove is slightly larger than the outer diameter of the cylindrical barrel, and a gland through hole is axially provided at the center of the gland; the gland is sleeved on the first end of the cylindrical barrel through the circular groove; Centering rod; Upper support ring; Lower support ring; the outer sides of the upper support ring and the lower support ring are connected to the inner side of the cylindrical ring structure; support ring through holes are provided at the centers of the upper support ring and the lower support ring; the outer diameter of the centering rod is slightly smaller than the diameter of the support ring through hole and the gland through hole, and the centering rod is provided through the support ring through hole and the gland through hole.

2. A fixture for integral potting of rubber gears according to claim 1, characterized in that: The clamp also includes a nut and a handle; the handle is formed into a long strip structure, a handle through hole is arranged at the center of the handle, an external thread is arranged on the first end of the centering rod, the nut is threadedly connected to the first end of the centering rod, the centering rod is arranged through the handle through hole, and when the mold is removed, the handle is placed between the nut and the upper support ring.

3. A fixture for integral potting of rubber gears according to claim 2, characterized in that: The outer side of the upper support ring is connected to the inner side wall of the first end of the cylindrical ring structure, and the outer side of the lower support ring is connected to the inner side wall of the second end of the cylindrical ring structure.

4. A fixture for integral potting of rubber gears according to claim 3, characterized in that: The centering rod includes a first diameter section, a second diameter section, a third diameter section, and a fourth diameter section which are connected in order from larger to smaller in diameter. The support ring through hole arranged at the center of the lower support ring includes a first through hole and a second through hole. The first through hole and the second through hole are connected in the axial direction. The diameter of the first through hole is larger than the diameter of the second through hole. The first diameter section is connected and cooperated with the first through hole, and the second diameter section is connected and cooperated with the second through hole. The third diameter section is used to connect and cooperate with the support ring through hole, the pressure cover through hole, and the handle through hole of the upper support ring; and the fourth diameter section is used to connect and cooperate with the nut.

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