Pressing block limiting mechanism for pressing machine workpiece bracket

Abstract

The utility model discloses a pressing block limiting mechanism for a pressing machine workpiece bracket, and belongs to the technical field of pressing machines. The pressing machine comprises a machine table and a workpiece bracket arranged on the machine table, a pressing block limiting mechanism of the workpiece bracket comprises a pressing block body fixed to the bottom of the workpiece bracket, and a pair of self-gravity limiting plates are arranged at the two ends of the pressing block body in the length direction in an up-down sliding mode. When the pressing block body is placed on a machine table in the state that the workpiece bracket faces upwards or downwards, the self-gravity limiting plates protrude out of the pressing block body in the direction facing the machine table, and the self-gravity limiting plates are matched and limited on the two sides of the machine table. The device has the advantages that the structure is simple, the device can be used when a workpiece bracket is positively and negatively placed after being integrally assembled, and direction switching is convenient and rapid; manual operation is not needed, the pressing block body is automatically limited through gravity, the limiting effect is stable and reliable, and the product machining precision and the working efficiency are effectively guaranteed.

Description

TECHNICAL FIELD

[0001] The utility model belongs to the technical field of press, specifically relates to a press block limiting mechanism for press workpiece bracket. BACKGROUND

[0002] The press is a part processing equipment for completing mechanical forming by applying pressure to metal materials to make them plastically deform to obtain required shape and precision, and generally adopts hydraulic cylinder, so it is also called oil press. The workpiece bracket is one of important components of the press and is arranged on the machine table to support the workpiece. The existing press workpiece bracket is too simple and is not equipped with a limiting device. Since the position is not fixed, the anti-vibration capacity is poor, displacement often occurs due to machine vibration during the stamping process, which leads to problems such as that the product size precision is not in place, the qualified rate is reduced and the like. Or the limiting device is too complex, such as the "press cushion limiting mechanism" introduced in the Chinese utility model patent authorized publication No. CN209505021U, which comprises a limiting pin, a steel ball, an elastic member and a screw, wherein the limiting pin further comprises a head, a connecting rod and a groove. The design structure is complex and difficult to process. For the bracket, the limiting shaft needs to be manually pressed to realize limiting, which affects the operation speed and further affects the efficiency.

[0003] In view of the above prior art, it is necessary to improve the existing press workpiece bracket cushion limiting structure. Therefore, the applicant has made a beneficial design, and the technical scheme to be introduced below is generated in this background. CONTENT OF THE UTILITY MODEL

[0004] The utility model aims at providing a press workpiece bracket cushion limiting mechanism, which has simple structure, can limit the workpiece bracket when it is placed in both directions, has convenient and reliable limiting mode and can effectively ensure the operation efficiency.

[0005] The utility model aims at providing a press workpiece bracket cushion limiting mechanism, which has simple structure, can limit the workpiece bracket when it is placed in both directions, has convenient and reliable limiting mode and can effectively ensure the operation efficiency.

[0006] In one specific embodiment of the utility model, a longitudinal extending long hole is formed in the self-gravity limiting plate, and a limiting bolt is fixedly connected with the press block body after penetrating through the long hole.

[0007] In another specific embodiment of the utility model, the limiting bolt includes a screw rod, and a step portion is formed at one end of the screw rod towards the head portion, the screw rod is fixed by screwing with the pressing block body, and the step portion is in sliding fit with the long hole.

[0008] In another specific embodiment of the utility model, the self-gravity limiting plate has a pair of long holes, and the pair of long holes are distributed at intervals along the length direction of the self-gravity limiting plate.

[0009] In another specific embodiment of the utility model, the machine table includes a pair of side plates arranged in parallel at intervals, and the length of the pressing block body is not less than the interval between the pair of side plates.

[0010] In another specific embodiment of the utility model, when the pressing block body is arranged on the pair of side plates, the pair of self-gravity limiting plates are lowered to the outer side surfaces of the pair of side plates due to self-gravity and are in limiting fit with each other.

[0011] The utility model is composed of a limiting bolt, a self-gravity limiting plate and a pressing block body, has simple structure, can be used when the workpiece bracket is placed in both directions after overall assembly, and the direction switching is convenient and fast; manual operation is not needed, the pressing block body is automatically limited by gravity, the limiting effect is stable and reliable, and the product machining precision and operation efficiency are effectively ensured. BRIEF DESCRIPTION OF DRAWINGS

[0012] Figure 1 It is the overall structure schematic view of the utility model;

[0013] Figure 2 It is the assembly schematic view of the pressing block limiting mechanism;

[0014] Figure 3 It is the assembly sectional view of the pressing block limiting mechanism;

[0015] Figure 4 It is the limiting schematic view when the pressing block body is placed in the forward direction;

[0016] Figure 5 It is the limiting schematic view when the pressing block body is placed in the reverse direction.

[0017] In the drawing: 1. machine table, 11. side plate; 2. workpiece bracket, 21. pressing block body, 22. self-gravity limiting plate, 221. long hole, 23. limiting bolt, 231. screw rod, 232. step portion. DETAILED DESCRIPTION

[0018] The specific embodiments of the utility model will be described in detail below with reference to the drawings, but the description of the embodiments is not a limitation on the technical solutions, and any change in form but not in substance according to the utility model concept should be regarded as the protection scope of the utility model.

[0019] In the following description, the concepts of up, down, left, right, front and back (or called directionality) are all for the position state of the figure being described, and the purpose is to facilitate the public to understand, so it cannot be understood as a special limitation on the technical solutions provided by the utility model.

[0020] Please refer to Figure 1 And Figure 2 The utility model relates to a kind of pressing block limiting mechanism for press workpiece bracket, the press includes machine table 1, the machine table 1 includes a pair of side plates 11 in width direction and is arranged in parallel with each other, a pair of workpiece brackets 2 is erected above a pair of side plates 11, and the workpiece bracket 2 is fixed by pressing block limiting mechanism.The pressing block limiting mechanism includes the pressing block main body 21 fixed to the bottom of workpiece bracket 2, and the length of the pressing block main body 21 is not less than the spacing between the pair of side plates 11.The pressing block main body 21 is slidably arranged with a pair of self-gravity limiting plates 22 on the length direction both ends.The pressing block main body 21 is erected on a pair of side plates 11, and the pair of self-gravity limiting plates 22 are arranged on the outer side of a pair of side plates 11 by gravity, and the pressing block main body 21 is limited by cooperation.

[0021] Specifically, see Figure 3 And in combination with Figure 1 The self-gravity limiting plate 22 is provided with a pair of longitudinal long holes 221 along the length direction, and the long hole 221 is provided with a limiting bolt 23.The limiting bolt 23 includes screw rod 231, and the screw rod 231 is expanded to form step portion 232 at the end towards the head, the screw rod 231 passes through long hole 221 and is screwed with the pressing block main body 21, until the head and the outer side of self-gravity limiting plate 22 abut by step portion 232 and long hole 221 form the upper and lower sliding cooperation structure.When workpiece bracket 2 is placed on machine table 1, the pair of self-gravity limiting plates 22 slides towards a pair of side plates 11 due to self-weight and protrudes from the pressing block main body 21, so that the lower end of the pair of self-gravity limiting plates 22 is arranged on the outer side of a pair of side plates 11 and cooperates to limit the pressing block main body 21 and the workpiece bracket 2 thereon.

[0022] See Figure 4 And Figure 5, especially, when the pressing block main body 21 is placed on the machine table 1 in the state that the workpiece bracket 2 is upward (normal placement) or downward (reverse placement), the pressing block limiting mechanism can play a role. The utility model discloses simple structure, and the limiting mode is convenient and reliable, and reaches the invention purpose.

Claims

1. A press block limiting mechanism for a workpiece carrier of a press, the press comprising a table (1) and a workpiece carrier (2) arranged on the table (1), the press block limiting mechanism of the workpiece carrier (2) comprising a press block main body (21) fixed to the bottom of the workpiece carrier (2), characterized in that: The pressing block body (21) is slidably arranged with a pair of self-weight limiting plates (22) on both ends in the length direction, when the workpiece bracket (2) is placed on the machine table (1) in the upward or downward state, the pair of self-weight limiting plates (22) protrude from the pressing block body (21) towards the machine table (1), and are limited on both sides of the machine table (1).

2. A press block stop mechanism for a press workpiece carrier according to claim 1, characterized in that: The self-weight limiting plate (22) is provided with a longitudinal long hole (221), and a limiting bolt (23) is fixedly connected with the pressing block body (21) through the long hole (221).

3. A press block stop mechanism for a press workpiece carrier according to claim 2, wherein: The limiting bolt (23) comprises a screw rod (231), and a stepped portion (232) is formed at one end of the screw rod (231) towards the head portion, the screw rod (231) is screw-connected with the pressing block body (21), and the stepped portion (232) is slidably connected with the long hole (221).

4. A press block stop mechanism for a press workpiece carrier according to claim 2, wherein: The self-weight limiting plate (22) is provided with a pair of long holes (221), and the pair of long holes (221) are distributed along the length direction of the self-weight limiting plate (22).

5. A press block stop mechanism for a press workpiece carrier according to claim 1, wherein: The machine table (1) comprises a pair of side plates (11) arranged in parallel and spaced apart, and the length of the pressing block body (21) is not less than the distance between the pair of side plates (11).

6. A press block stop mechanism for a press workpiece carrier according to claim 5, wherein: When the pressing block body (21) is arranged on the pair of side plates (11), the pair of self-weight limiting plates (22) are limited on the outer side of the pair of side plates (11) due to the self-weight.

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